SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                -----------------

                                    FORM 8-K
                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

                                  June 12, 2002
                        (Date of Earliest Event Reported)

                      VALERO ENERGY CORPORATION THRIFT PLAN
             (Exact name of registrant as specified in its charter)



           n/a                        1-13175                    74-1828067
     (State or other          (Commission File Number)         (IRS Employer
       Jurisdiction                                            Identification
    of incorporation)                                             Number)

                                One Valero Place
                            San Antonio, Texas 78212
          (Address of principal executive offices, including Zip Code)
                                 (210) 370-2000
              (Registrant's telephone number, including area code)












Item 4.  Changes in Registrant's Certifying Accountant.

On March 12, 2002, upon the recommendation of the audit committee,  the board of
directors of Valero Energy Corporation  ("Valero" or the "Company") approved the
dismissal  of  Arthur   Andersen  LLP  ("Arthur   Andersen")  as  the  Company's
independent auditors following the 2001 audit and the selection of Ernst & Young
LLP to serve as the Company's  independent auditors for the year ending December
31, 2002. The appointment of Ernst & Young was ratified by Valero's stockholders
at the Company's 2002 Annual Meeting of Stockholders held on May 9, 2002.

On June  12,  2002,  Valero,  as the Plan  Administrator  of the  Valero  Energy
Corporation  Thrift Plan (the  "Plan"),  dismissed  Arthur  Andersen  LLP as the
independent  auditors of the Plan for the year ending  December  31,  2001,  and
selected Ernst & Young LLP to serve as the Plan's independent auditors.

Arthur  Andersen's  reports on the Plan's  financial  statements for each of the
years ended  December  31,  2000 and 1999 did not contain an adverse  opinion or
disclaimer of opinion,  nor were they  qualified or modified as to  uncertainty,
audit scope or accounting  principles.  During the years ended December 31, 2000
and 1999 and through the date hereof,  there were no  disagreements  with Arthur
Andersen on any matter of accounting principle or practice,  financial statement
disclosure,  or auditing  scope or  procedure  which,  if not resolved to Arthur
Andersen's satisfaction,  would have caused Arthur Andersen to make reference to
the  subject  matter  in  connection  with its  report on the  Plan's  financial
statements  for such years,  and there were no  reportable  events as defined in
Item 304(a)(1)(v) of Regulation S-K.

The Plan  Administrator  provided  Arthur  Andersen with a copy of the foregoing
disclosures. Attached as Exhibit 16 is a copy of Arthur Andersen's letter, dated
June 12, 2002, stating its agreement with such statements.

During the years ended December 31, 2000 and 1999 and through June 12, 2002, the
Plan Administrator did not consult Ernst & Young with respect to the application
of  accounting  principles  to a  specified  transaction,  either  completed  or
proposed,  or the type of audit  opinion  that might be  rendered  on the Plan's
financial statements,  or any other matters or reportable events as set forth in
Items 304(a)(2)(i) and (ii) of Regulation S-K.








Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

(a) - Not applicable.

(b) - Not applicable.

(c) - Exhibits.


Exhibit 16     Letter from Arthur Andersen LLP to the        Filed with this
               Securities and Exchange Commission dated      document
               June 12, 2002











                                   SIGNATURES

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

                                                VALERO ENERGY CORPORATION





Date:  June 13, 2002                      By:  _____________________
                                          Name:  Jay D. Browning
                                          Title: Vice President and
                                                 Corporate Secretary









                                  EXHIBIT INDEX




  Exhibit Number    Description

        16          Letter from Arthur Andersen LLP to the Securities and
                    Exchange Commission dated June 12, 2002







                                   EXHIBIT 16


Office of the Chief Accountant
Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549


June 12, 2002

Dear Sir/Madam:

We have read Item 4 included in this Form 8-K dated June 12, 2002, of the Valero
Energy  Corporation  Thrift Plan to be filed with the  Securities  and  Exchange
Commission and are in agreement with the statements contained therein.

Very truly yours,


--------------------
ARTHUR ANDERSEN LLP