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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 11-K



                     ANNUAL REPORT PURSUANT TO SECTION 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 2001



                         Commission File Number 1-13175



                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                            VALERO ENERGY CORPORATION
                                One Valero Place
                           San Antonio, TX 78212-3186




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                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                                      Index


                                                                            Page
                                                                            ----

Reports of Independent Auditors............................................    3

Financial Statements:

     Statements of Net Assets Available for Benefits
       as of December 31, 2001 and 2000....................................    5

     Statements of Changes in Net Assets Available for Benefits
       for the Years Ended December 31, 2001 and 2000......................    6

     Notes to Financial Statements.........................................    7

Supplemental Schedules:

     Schedule G, Part III - Schedule of Nonexempt Transactions
       for the Year Ended December 31, 2001................................   15

     Schedule H, Line 4i - Schedule of Assets (Held at End of Year)
       as of December 31, 2001.............................................   16

Signature..................................................................   17

Consent of Independent Auditors............................................   18

Notice Regarding Consent of Arthur Andersen LLP............................   19









                                       2




                         REPORT OF INDEPENDENT AUDITORS


To the Administrative Committee of
Valero Energy Corporation

We have audited the accompanying  statement of net assets available for benefits
of Valero  Savings Plan  (formerly  UDS 401(k)  Retirement  Savings  Plan) as of
December 31, 2001 and the related  statement of changes in net assets  available
for  benefits  for the year  then  ended.  These  financial  statements  are the
responsibility  of the Plan's  management.  Our  responsibility is to express an
opinion on these financial statements based on our audit.

We conducted our audit in accordance with auditing standards  generally accepted
in the United States. Those standards require that we plan and perform the audit
to obtain reasonable  assurance about whether the financial  statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting  the amounts and  disclosures in the financial  statements.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audit  provides a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the net assets available for benefits of the Plan as of
December 31, 2001 and the changes in its net assets  available  for benefits for
the year then ended, in conformity with accounting principles generally accepted
in the United States.

Our audit was  performed  for the  purpose  of  forming  an  opinion on the 2001
financial  statements taken as a whole. The supplemental  schedules of nonexempt
transactions  for the year ended  December  31, 2001 and assets  (held at end of
year) as of  December  31,  2001 are  presented  for the  purpose of  additional
analysis  and  are  not a  required  part of the  financial  statements  but are
supplementary  information  required  by the  Department  of  Labor's  Rules and
Regulations for Reporting and Disclosure  under the Employee  Retirement  Income
Security Act of 1974. The supplemental  schedules are the  responsibility of the
Plan's  management.  The  supplemental  schedules  have  been  subjected  to the
auditing procedures applied in our audit of the financial statements and, in our
opinion, are fairly stated in all material respects in relation to the financial
statements taken as a whole.

                                                      /s/ ERNST & YOUNG LLP

San Antonio, Texas
June 26, 2002



                                       3



THIS IS A COPY OF THE AUDIT REPORT  PREVIOUSLY  ISSUED BY ARTHUR ANDERSEN LLP IN
CONNECTION  WITH THE VALERO  SAVINGS  PLAN'S  (FORMERLY  UDS  401(k)  RETIREMENT
SAVINGS  PLAN) FILING ON FORM 11-K FOR THE YEAR ENDED  DECEMBER  31, 2000.  THIS
AUDIT REPORT HAS NOT BEEN  REISSUED BY ARTHUR  ANDERSEN LLP IN  CONNECTION  WITH
THIS FILING ON FORM 11-K. SEE EXHIBIT 23.2 FOR FURTHER DISCUSSION.


                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Employee Benefits Committee of
Ultramar Diamond Shamrock Corporation:

We have audited the  accompanying  statements  of net assets  available for plan
benefits of the UDS 401(k) Retirement Savings Plan (the Plan) as of December 31,
2000 and 1999, and the related statements of changes in net assets available for
plan  benefits  for the years then ended.  These  financial  statements  and the
schedule referred to below are the responsibility of the Plan's management.  Our
responsibility  is to  express  an opinion  on these  financial  statements  and
schedule based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States. Those standards require that we plan and perform the audit
to obtain reasonable  assurance about whether the financial  statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting  the amounts and  disclosures in the financial  statements.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material respects, the net assets available for plan benefits of the Plan as
of December 31, 2000 and 1999, and the changes in net assets  available for plan
benefits  for each of the  years  then  ended,  in  conformity  with  accounting
principles generally accepted in the United States.

Our audits  were  performed  for the  purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedule of assets (held
at end of year) as of December 31, 2000  included as Schedule I is presented for
the  purpose of  additional  analysis  and is not a  required  part of the basic
financial statements but is supplementary information required by the Department
of Labor Rules and Regulations  for Reporting and Disclosure  under the Employee
Retirement  Income  Security  Act of 1974.  The  supplemental  schedule has been
subjected  to the  auditing  procedures  applied  in  the  audits  of the  basic
financial  statements  and, in our  opinion,  is fairly  stated in all  material
respects in relation to the basic financial statements taken as a whole.

                                              /s/ ARTHUR ANDERSEN LLP

San Antonio, Texas
June 20, 2001



                                       4




                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                 STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS


                                                          December 31,
                                                          ------------
Assets:                                            2001                 2000
                                                   ----                 ----

Investments, at fair value.............       $ 260,897,764        $ 236,460,520
                                                -----------          -----------

Contributions receivable:
  Employer.............................             908,205              783,829
  Employee.............................           2,462,133            2,193,586
                                                -----------          -----------
                                                  3,370,338            2,977,415
                                                -----------          -----------

Net assets available for benefits......       $ 264,268,102        $ 239,437,935
                                                ===========          ===========

                       See Notes to Financial Statements.






                                       5




                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

           STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS


                                                     Years Ended December 31,
                                                     ------------------------
                                                     2001               2000
                                                     ----               ----
Additions to net assets:
  Investment income:
    Interest income .......................     $   2,651,173      $   2,160,144
    Dividend income .......................         5,391,527         11,977,346
    Net appreciation in fair value
      of investments ......................        12,970,272          4,207,739
                                                  ------------       -----------
                                                   21,012,972         18,345,229
                                                  -----------        -----------
  Contributions:
    Employee...............................        16,151,623         12,974,092
    Employer ..............................         6,623,279          4,724,109
                                                  ------------       -----------
                                                   22,774,902         17,698,201
                                                  -----------        -----------

  Asset transfers in from other plans .....           524,491         33,733,099
                                                  ------------       -----------

      Total additions  ....................        44,312,365         69,776,529
                                                  -----------        -----------

Deductions from net assets:
  Withdrawals by participants .............        19,482,198         30,873,610
                                                  -----------        -----------

Net increase in net assets available
    for benefits...........................        24,830,167         38,902,919

Net assets available for benefits:
  Beginning of year .......................       239,437,935        200,535,016
                                                  -----------        -----------
  End of year .............................     $ 264,268,102      $ 239,437,935
                                                  ===========        ===========

                       See Notes to Financial Statements.



                                       6




                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                          NOTES TO FINANCIAL STATEMENTS


1. Description of the Plan

As used in this report, the term "UDS" may refer, depending upon the context, to
Ultramar  Diamond  Shamrock  Corporation,   one  or  more  of  its  consolidated
subsidiaries, or all of them taken as a whole.

Prior to its acquisition by Valero Energy  Corporation  (Valero) on December 31,
2001, via the merger of UDS with and into Valero, UDS was an independent refiner
and  retailer of refined  products  and  convenience  store  merchandise  in the
central,  southwest  and  northeast  regions  of the United  States and  eastern
Canada. UDS owned and operated seven refineries located in Texas (2), California
(2),  Oklahoma,  Colorado and Quebec,  Canada, and marketed its products through
approximately 4,500 company-operated and dealer-operated  convenience stores and
86 unattended  cardlock  stations.  In the northeast region of the United States
and in  eastern  Canada,  UDS  sold,  on a retail  basis,  home  heating  oil to
approximately 250,000 households.

Effective April 1, 2002, the UDS 401(k) Retirement  Savings Plan was renamed the
Valero Savings Plan.  The following  description of the Valero Savings Plan (the
Plan) provides only general  information.  Participants should refer to the Plan
agreement for a more complete description of the Plan's provisions.

General:
The Plan is a defined  contribution  plan that  previously  covered all eligible
employees of UDS.  Eligible  employees  included  all  non-union  employees  and
certain  union  employees  who had completed one year of service and who were at
least 18 years old. Effective April 1, 2002,  non-store  employees of UDS are no
longer  eligible to  participate  in the Plan but are eligible to participate in
the Valero Energy Corporation Thrift Plan. The Plan is subject to the provisions
of the Employee Retirement Income Security Act of 1974 (ERISA).

Prior to its  acquisition  by  Valero,  UDS was the  sponsor  of the  Plan.  The
Employee  Benefits  Committee (the  Administrator),  which consisted of at least
three members appointed by the Chief Executive Officer of UDS,  administered the
Plan.  Effective  December 31, 2001, Valero became the Plan sponsor and Valero's
Benefit Plans  Administrative  Committee  became the  Administrator of the Plan.
Vanguard  Fiduciary  Trust  Company is the trustee and record keeper of the Plan
and has custody of the securities and investments of the Plan.

Plan Merger and Acquisitions:
On December 31, 2001, Valero completed its acquisition of UDS (UDS Acquisition).
Under  the  terms of the  acquisition  agreement,  UDS  shareholders  (excluding
certain UDS benefit plan  participants)  received,  for each share of UDS common
stock they held, at their election,  cash,  Valero common stock or a combination
of cash and Valero common stock.  Based on the exchange election  results,  UDS'
shareholders  electing  Valero  shares  received,  for each  share of UDS common
stock,  0.9265  shares of Valero  common stock and $16.32 in cash.  Shareholders
electing cash and  non-electing  shareholders  received  $49.47 in cash for each
share of UDS common stock.  Based on the above, the total  consideration paid by
Valero to UDS  shareholders  included  approximately  $2.1  billion  in cash and
approximately  45.9 million shares of Valero common stock.  Valero accounted for
the UDS Acquisition using the purchase method.




                                       7




                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)


Shares of UDS common stock held under the Plan,  whether in the Ultramar Diamond
Shamrock  Corporation  Common  Stock  Fund,  the UDS ESOP1 Stock Fund or the UDS
ESOP2 Stock Fund,  were not subject to the  proration of cash and Valero  common
stock as described above. Per the terms of the acquisition agreement,  effective
December 31, 2001, these shares were converted into Valero common stock based on
the exchange ratio of 1.3826 shares of Valero common stock for each share of UDS
common stock.

On September 29, 2000, UDS acquired Valley  Shamrock,  Inc.  Effective with this
acquisition,  employees of Valley Shamrock,  Inc. became eligible to participate
in the Plan.  Effective  August 1, 2001, the Valley  Shamrock,  Inc.  Employee's
401(k)  Plan was merged into the Plan.  For the year ended  December  31,  2001,
asset  transfers  in from other plans in the  statement of changes in net assets
available for benefits includes $405,837 related to this plan merger.

On  August  31,  2000,  UDS  acquired  the  Golden  Eagle  Refinery  from  Tosco
Corporation.  Effective  September  1, 2000,  the  employees at the Golden Eagle
Refinery  became  eligible to participate  in the Plan. In connection  with this
acquisition, UDS agreed to accept the one-time voluntary rollover of each Golden
Eagle  employee's  account balance  including  outstanding loan balance from the
Tosco Corporation Capital Accumulation Plan (the Tosco Plan).  Effective October
31, 2000, the Golden Eagle employee  accounts in the Tosco Plan were transferred
to the Plan. These rollovers are included in asset transfers in from other plans
in the  statement of changes in net assets  available  for benefits for the year
ended December 31, 2000.

Effective September 30, 1999, the Ultramar Diamond Shamrock Corporation Employee
Stock  Ownership  Plan  I and  the  Ultramar  Diamond  Shamrock  Employee  Stock
Ownership  Plan II  (collectively  known as the ESOP Plans) were merged with the
Plan.   Participant  account  balances  from  the  respective  ESOP  Plans  were
transferred  during 1999 from Key Trust Company,  the trustee of the ESOP Plans,
to Vanguard  Fiduciary  Trust Company's UDS ESOP1 Stock Fund and UDS ESOP2 Stock
Fund.  After  the  transfers  were  completed,  25% of the  common  shares  were
immediately eligible for diversification by the ESOP Plans'  participants,  with
an  additional  25%  becoming  eligible  on  January  1,  2000,  2001 and  2002.
Contributions  to the UDS ESOP1  Stock  Fund or the UDS ESOP2  Stock Fund by the
participants are not permitted.  Included in asset transfers in from other plans
in the  statement of changes in net assets  available  for benefits for the year
ended  December  31, 2001 is $101,527  and $17,127 of  transfers in from the UDS
ESOP1 Stock Fund and UDS ESOP2 Stock Fund, respectively. There were no transfers
from the UDS ESOP1  Stock Fund or the UDS ESOP2 Stock Fund during the year ended
December 31, 2000.

Contributions:
Participants can contribute from 1% to 15% of their compensation,  as defined in
the Plan.  In addition,  any employee may make rollover  contributions.  For the
years ended December 31, 2001 and 2000,  rollover  contributions were $1,314,842
and $1,419,209,  respectively, and are included in employee contributions in the
statements of changes in net assets available for benefits. UDS contributes from
$0.60 to $1.00 for every  $1.00 of the  participant's  contribution  up to 6% of
compensation.  UDS  also  makes a  profit-sharing  contribution  based  on 2% of
compensation for certain participants from the Golden Eagle Refinery.


                                       8


                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)


UDS may make  discretionary  company  contributions to the Plan for a plan year,
subject to certain limitations.  For the years ended December 31, 2001 and 2000,
UDS did not make additional discretionary company contributions to the Plan.

The Internal  Revenue Code  establishes  an annual  limitation  on the amount of
individual pre-tax salary deferral contributions. This limit was $10,500 for the
years ended December 31, 2001 and 2000.

Participant Accounts:
Each  participant's  account  is  valued  on a daily  basis  and is equal to the
participant's  and company  contributions  plus investment  income less benefits
paid to the participant.

Vesting:
Participants vest immediately in their contributions, rollover contributions and
actual earnings thereon. Participants become 100% vested in company matching and
discretionary  contributions  and related  earnings after five years of service.
Certain  participants are subject to accelerated  vesting as a result of special
Plan provisions  associated with past mergers.  However,  a participant  will be
vested in 100% of his account balance upon his death, disability,  attainment of
normal  retirement  age,  as  defined  in  the  Plan,   termination  or  partial
termination of the Plan or a change in control, as defined in the Plan.

Investment  Options:
During the years ended  December  31, 2001 and 2000,  participants  were able to
allocate their  contributions and employer  matching  contributions and transfer
existing account balances,  except for certain amounts  restricted under the UDS
ESOP1 Stock Fund and the UDS ESOP2 Stock Fund,  among mutual funds, a collective
trust,  other  self-directed  investments  and  the  Ultramar  Diamond  Shamrock
Corporation Common Stock Fund.

Participant Loans:
Participants  may borrow a minimum of $1,000 up to a maximum equal to the lesser
of $50,000 or 50% of their vested account  balance.  The participant may elect a
repayment  term of up to five years for general  purpose loans or up to 10 years
for the  purchase of a primary  residence.  The loan is secured by a lien on the
participant's  vested account balance and bears interest at a reasonable rate as
determined  by the  Administrator.  Principal  and  interest  is repaid  through
payroll deductions. A participant can have only one loan outstanding at any time
and must wait three months after paying off a loan before initiating a new loan.

Withdrawals and Distributions:
Upon  termination of service,  a participant can choose a lump-sum  distribution
equal to the vested  interest of his or her account or can defer receipt of such
distribution,  depending on the terminated participant's vested account balance.
If the vested account balance is less than $5,000,  the  distribution can not be
deferred. If the vested account balance is more than $5,000, the participant can
consent to the  distribution,  or can defer to a later date,  but not later than
the normal retirement date. If the participant takes no action, the distribution
is made at normal  retirement date.  Optional forms of payments are available to
certain participants as described in the Plan agreement.


                                       9


                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)

In the event of hardship,  participants can elect to withdraw a portion of their
vested account balance, subject to income tax and penalties.

Forfeitures:
In the  event a  participant  terminates  before  becoming  100%  vested  in the
employer contributions,  the nonvested employer contribution amounts held in the
participant's account will be forfeited.  If the terminated participant receives
a  distribution  from the vested portion of his account,  the nonvested  amounts
remaining in the  participant's  account are treated as a forfeiture.  Forfeited
amounts  are  used to  reduce  future  employer  contributions  or  defray  Plan
administrative  costs.  During  the  years  ended  December  31,  2001 and 2000,
employer  contributions  were reduced by $159,066 and  $230,659  from  forfeited
nonvested  accounts,  respectively.  As of December 31, 2001,  $18,209 in unused
forfeitures is available for future use under the Plan.

Plan Expenses:
UDS pays the  administrative  expenses of the Plan and  provides  certain  other
services at no cost to the Plan.

2. Summary of Accounting Policies

Basis of Accounting:
The Plan's financial  statements are prepared on the accrual basis of accounting
in accordance with United States generally accepted accounting principles.

Use of Estimates:
The  preparation  of  financial  statements  in  conformity  with United  States
generally accepted  accounting  principles requires management to make estimates
that  affect the  amounts  reported in the  financial  statements  of assets and
changes therein,  and disclosure of contingent  assets and  liabilities.  Actual
results could differ from those estimates.

Investment Valuation:
Investments in mutual funds are valued at quoted market prices,  which represent
the net asset value of shares held by the Plan as of the balance sheet date. The
investment in  common/collective  trust is stated at fair value as determined by
the  issuer  of the  fund  based on the fair  value  of the  underlying  assets.
Self-directed  investments  are valued at quoted market prices as of the balance
sheet date.  Participant loans are valued at cost which approximates fair value.
UDS common stock is valued at its quoted  market  price as of the balance  sheet
date.

Income Recognition:
Purchases and sales of investments are recorded on a trade-date basis.  Interest
income  is  recorded  on  the  accrual  basis.  Dividends  are  recorded  on the
ex-dividend date.

Net  appreciation  (depreciation)  in fair value of investments  consists of net
realized  gains  and  losses  on the  sale of  investments  and  net  unrealized
appreciation (depreciation) of investments.


                                       10


                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)


Withdrawals by Participants:
Withdrawals by participants are recorded when paid.

Risks and Uncertainties:
The Plan's  investments,  in  general,  are  exposed to various  risks,  such as
interest rate,  credit and overall market  volatility  risk. Due to the level of
risk associated with certain investment  securities,  it is reasonably  possible
that changes in the value of investment  securities  will occur in the near term
and that such changes could materially affect participants' account balances and
amounts presented in the statements of net assets available for benefits.

Reclassifications:
Certain  previously  reported  amounts have been  reclassified to conform to the
2001 presentation.

3. Investments

Investments that represent 5% or more of the Plan's net assets are as follows:

                                                             December 31,
                                                             ------------
                                                        2001            2000
                                                        ----            ----

     Vanguard PRIMECAP Fund .....................   $ 50,876,590   $ 57,159,426
     Vanguard Retirement Savings Trust...........     38,472,131     27,341,012
     Vanguard Wellington Fund Investor Shares ...     33,173,502     29,783,466
     Vanguard 500 Index Fund Investor Shares.....     26,106,977     28,700,428
     UDS common stock:
        UDS Common Stock Fund....................     14,389,188      8,712,973
        UDS ESOP1 Stock Fund* ...................     46,726,029     36,290,707
        UDS ESOP2 Stock Fund* ...................     11,644,077      8,879,465
        --------------
        *   Nonparticipant-directed.

During  the year  ended  December  31,  2001 and 2000,  the  Plan's  investments
(including  gains and losses on  investments  bought  and sold,  as well as held
during the year) appreciated (depreciated) in value as follows:

                                                    Years Ended December 31,
                                                    ------------------------
                                                     2001              2000
                                                     ----              ----

     Mutual funds..............................  $(17,924,869)     $(10,746,926)
     Self-directed investments ................           782               944
     Common shares of UDS .....................    30,894,359        14,953,721
                                                   ----------        ----------

         Net appreciation in fair value
           of investments .....................  $ 12,970,272     $   4,207,739
                                                   ==========        ==========


                                       11




                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)




4. Nonparticipant-Directed Investments

The net assets and the changes in net assets relating to nonparticipant-directed
investments  (comprised of the UDS ESOP1 Stock Fund and UDS ESOP2 Stock Fund) as
of and for the years ended December 31, 2001 and 2000 are shown below.

                                                              December 31,
                                                              ------------
                                                         2001           2000
                                                         ----           ----
     Net assets:
           Common shares of UDS..................   $ 58,370,106    $ 45,170,172
                                                      ==========      ==========



                                                        Years Ended December 31,
                                                        ------------------------
                                                         2001           2000
                                                         ----           ----

     Changes in net assets:
          Interest and dividend income ..........   $    856,465   $  1,710,261
          Net appreciation in fair value
            of investments ......................     25,441,892     12,456,093
          Participant loan repayments ...........          1,048              -
          Asset transfers in from other
            plans ...............................        118,654              -
          Benefits paid to participants .........     (3,619,969)    (3,809,393)
          Transfers to participant-directed
            investments .........................     (9,598,156)    (4,728,777)
                                                      ----------     ----------
            Net increase in net assets ..........     13,199,934      5,628,184
     Net assets as of beginning of year .........     45,170,172     39,541,988
                                                      ----------     ----------
     Net assets as of end of year ...............   $ 58,370,106   $ 45,170,172
                                                      ==========     ==========

5. Party In Interest Transactions

Certain  Plan  investments  are shares of mutual  funds and a  collective  trust
managed  by an  affiliate  of  the  Trustee  and  shares  of UDS  common  stock.
Transactions in these investments qualify as party in interest transactions.

6. Plan Termination

Although it has not expressed any intent to do so, UDS, and now Valero,  has the
right under the Plan to discontinue or reduce its contributions and to terminate
the Plan at any time subject to the  provisions  of ERISA.  In the event of plan
termination, participants will become 100% vested in their accounts.

7. Tax Status

The Internal  Revenue  Service has determined and informed UDS by a letter dated
September  22, 1995,  that the Plan and related trust are designed in accordance
with  applicable  sections of the Internal  Revenue Code.  Although the Plan has
been amended since  receiving  the  determination  letter,  UDS, and now Valero,
believe that the Plan is designed and is currently  being operated in compliance
with the applicable requirements of the Internal Revenue Code.


                                       12


                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)


8. Reconciliation of Financial Statements to Form 5500

The following is a  reconciliation  of net assets available for benefits per the
financial  statements to the Form 5500 Annual  Return/Report of Employee Benefit
Plan:



                                                                                         December 31,
                                                                                         ------------
                                                                                   2001                2000
                                                                                   ----                ----

                                                                                             
Net assets available for benefits per the financial statements............      $ 264,268,102      $ 239,437,935
    Amounts allocated to withdrawing participants ........................            (16,326)            (1,167)
                                                                                  -----------        -----------
Net assets available for benefits per the Form 5500 ......................      $ 264,251,776      $ 239,436,768
                                                                                  ===========        ===========


The  following  is a  reconciliation  of  withdrawals  by  participants  per the
financial  statements to the Form 5500 Annual  Return/Report of Employee Benefit
Plan:



                                                                                   Years Ended December 31,
                                                                                   ------------------------
                                                                                   2001                2000
                                                                                   ----                ----

                                                                                              
Withdrawals by participants per the financial statements .................       $ 19,482,198       $ 30,873,610
    Add: Amounts allocated to withdrawing participants
      as of end of year...................................................             16,326              1,167
    Less: Amounts allocated to withdrawing participants
      as of beginning of year.............................................             (1,167)          (221,857)
                                                                                   ----------         ----------
Benefits paid to participants per the Form 5500 ..........................       $ 19,497,357       $ 30,652,920
                                                                                   ==========         ==========


9. Subsequent Events

Effective January 1, 2002, the Plan was amended as follows:
o    participants will vest in company matching and discretionary  contributions
     at the rate of 20% per year with 100% vesting  after five years of service;
     and
o    the change in control provision in which a participant  becomes 100% vested
     in his account balance was eliminated.

Effective  January 1, 2002, the company matching  contribution for UDS non-store
employees was changed to 75% of 8% of employee contributions.

Effective  April 1, 2002,  UDS  non-store  employees  are no longer  eligible to
participate  in the Plan but are eligible to  participate  in the Valero  Energy
Corporation  Thrift Plan. A UDS  non-store  employee is an employee who is not a
retail store employee,  corporate kitchen employee, employee of Ultramar Energy,
Inc.  or  employee  of  the  Golden  Eagle  Refinery.  However,  eligibility  is
maintained in the Plan for any non-store  hold separate  business  employee,  as
defined in the Plan.



                                       13


                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)


Effective  May 1,  2002,  the  portion  of the  Plan  related  to UDS  non-store
employees was merged into the Valero Energy  Corporation Thrift Plan. The assets
transferred from the Plan to the Valero Energy  Corporation  Thrift Plan totaled
approximately   $153.0  million.   For  details   regarding  the  Valero  Energy
Corporation Thrift Plan,  participants should refer to the financial  statements
and notes thereto  included in Valero Energy  Corporation  Thrift Plan Form 11-K
for the year ended December 31, 2001.

On April 5, 2002,  the Plan was amended  effective  July 1, 2002,  to provide as
follows:
o    participants  can contribute up to a maximum of 30% of their  compensation,
     as defined in the Plan,
o    participants  may elect  distributions  of their vested account  balance in
     equal monthly installments over a period not to exceed five years, and
o    participants may elect that funds in the Employer Stock Account,  UDS ESOP1
     Stock Fund account or UDS ESOP2 Stock Fund account be distributed in Valero
     common stock as a single payment or equal annual installments over a period
     not to exceed five years.

On April 5, 2002,  the Plan was amended  effective  August 1, 2002, to limit the
number of outstanding  loans  permitted for each  participant to two outstanding
loans at a time.








                                       14





                                                            SCHEDULE G, Part III


                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                                 EIN: 13-3663331
                                  Plan No. 008

                       Schedule of Nonexempt Transactions
                          Year Ended December 31, 2001



                   Relationship to plan,
   Identity of       employer or other     Description of
 party involved      party-in-interest     transactions         Amount  Interest
 --------------      -----------------     ------------------   ------  --------

Ultramar                Employer           Participant
Diamond                                    contributions were
Shamrock                                   not remitted to the
Corporation                                Plan in a timely
                                           manner:

                                           Deemed loan:
                                           June 21, 2001
                                           Contributions
                                           remitted:
                                            July 16, 2001        $ 704    $ 15
                                           Interest remitted:
                                            October 11, 2001






                                       15



                                                             SCHEDULE H, Line 4i



                               VALERO SAVINGS PLAN
                  (formerly UDS 401(k) Retirement Savings Plan)

                                 EIN: 13-3663331
                                  Plan No. 008

                    Schedule of Assets (Held at End of Year)
                             As of December 31, 2001

                                                                                                                  Current
      Identity of Issue                         Description of Investment                      Cost                Value
      -----------------                         -------------------------                      ----               -------
                                                                                                      
*  The Vanguard Group                 Vanguard 500 Index Fund Investor Shares                      **          $  26,106,977
*  The Vanguard Group                 Vanguard Extended Market Index
                                          Fund Investor Shares                                     **              1,167,696
*  The Vanguard Group                 Vanguard Federal Money Market Fund                           **              5,618,954
*  The Vanguard Group                 Vanguard International Growth Fund                           **              2,101,958
*  The Vanguard Group                 Vanguard International Value Fund                            **                863,282
*  The Vanguard Group                 Vanguard Long Term Corporate
                                          Fund Investor Shares                                     **              2,210,432
*  The Vanguard Group                 Vanguard Long Term Treasury
                                          Fund Investor Shares                                     **                764,282
*  The Vanguard Group                 Vanguard PRIMECAP Fund                                       **             50,876,590
*  The Vanguard Group                 Vanguard Total Bond Market Index Fund                        **              2,818,580
*  The Vanguard Group                 Vanguard U.S. Growth Fund                                    **              7,819,450
*  The Vanguard Group                 Vanguard Wellington Fund Investor Shares                     **             33,173,500
*  The Vanguard Group                 Vanguard Windsor II Fund Investor Shares                     **              8,791,717
   Credit Suisse                      Warburg Pincus Value II                                      **                227,322
*  The Vanguard Group                 Vanguard Retirement Savings Trust                            **             38,472,131

*  Ultramar Diamond                   Ultramar Diamond Shamrock Corporation
      Shamrock Corporation                ESOP1 Common Stock Fund                           $ 18,235,551          46,726,029

*  Ultramar Diamond                   Ultramar Diamond Shamrock Corporation
      Shamrock Corporation                ESOP2 Common Stock Fund                              5,168,781          11,644,077

*  Ultramar Diamond                   Ultramar Diamond Shamrock Corporation
      Shamrock Corporation             Common Stock Fund                                           **             14,389,188

*  UDS 401(k) Retirement              Participant loans --
      Savings Plan                      Interest rates range from 7% - 11.5%                       **              7,071,335

   Self-directed investments:
    Salomon Smith Barney Inc.         Smith Barney Money Funds                                     **                 16,095
    Salomon Smith Barney Inc.         Smith Barney Appreciation Fund                               **                 17,997
    Salomon Smith Barney Inc.         Government Backed Trust CL T-1                               **                  9,576
    Salomon Smith Barney Inc.         Government Trust CTF CL 3-C-REG                              **                 10,596
                                                                                                                 -----------

                                                                                                               $ 260,897,764
                                                                                                                 ===========

*    Parties-in-interest to the Plan.

**   Historical cost  information is omitted as it is  participant-directed  and
     disclosure is not required.



                                       16




                                    SIGNATURE

The Plan.  Pursuant to the requirements of the Securities  Exchange Act of 1934,
the Administrative  Committee has duly caused this annual report to be signed on
its behalf by the undersigned hereunto duly authorized.



                          Valero Savings Plan
                          (formerly UDS 401(k) Retirement Savings Plan)

                          By: /s/ John D. Gibbons
                          John D. Gibbons
                          Chairman, Administrative Committee and
                          Executive Vice President and Chief Financial Officer,
                          Valero Energy Corporation

Date:  June 28, 2002




                                       17




                                                                    Exhibit 23.1

                         CONSENT OF INDEPENDENT AUDITORS

We consent to the  incorporation  by  reference in the  Registration  Statements
(Form S-8 Nos. 333-47322 and 333-81858) pertaining to the Savings Plan of Valero
Energy  Corporation  (formerly UDS 401(k) Retirement Savings Plan) of our report
dated June 26, 2002,  with respect to the financial  statements and schedules of
the Valero Savings Plan (formerly UDS 401(k)  Retirement  Savings Plan) included
in this Annual Report (Form 11-K) for the year ended December 31, 2001.

                                                          /s/ ERNST & YOUNG LLP


San Antonio, Texas
June 26, 2002



                                       18



                                                                    EXHIBIT 23.2


                 NOTICE REGARDING CONSENT OF ARTHUR ANDERSEN LLP

On June 12,  2002,  the Valero  Savings  Plan  (formerly  UDS 401(k)  Retirement
Savings Plan)  dismissed  Arthur  Andersen LLP as its  independent  auditors and
appointed  Ernst & Young LLP to replace Arthur  Andersen LLP as the  independent
auditor of the Plan.  Prior to the date of this Form 11-K (which is incorporated
by reference into Valero Energy Corporation's filings on Form S-8 Nos. 333-47322
and  333-81858),  the Arthur Andersen  partner  responsible for the audit of the
most recent  audited  financial  statements of the Valero Savings Plan (formerly
UDS 401(k)  Retirement  Savings  Plan) as of December  31, 2000 and for the year
then ended resigned from Arthur Andersen. As a result, after reasonable efforts,
the Plan has been  unable to obtain  Arthur  Andersen's  written  consent to the
incorporation by reference into Valero Energy Corporation's  filings on Form S-8
Nos.  333-47322  and  333-81858  of its audit  report with respect to the Plan's
financial  statements as of December 31, 2000 and for the year then ended. Under
these circumstances, Rule 437a under the Securities Act permits the Plan to file
this Form 11-K without a written consent from Arthur Andersen LLP. However, as a
result,  Arthur  Andersen LLP will not have any liability under Section 11(a) of
the Securities Act for any untrue statements of a material fact contained in the
financial  statements  audited  by Arthur  Andersen  LLP or any  omissions  of a
material fact required to be stated therein. Accordingly, you would be unable to
assert a claim against Arthur Andersen LLP under Section 11(a) of the Securities
Act  because it has not  consented  to the  incorporation  by  reference  of its
previously  issued report into Valero Energy  Corporation's  filings on Form S-8
Nos. 333-47322 and 333-81858.


                                       19