Engine Controls - Revised Code 43 Diagnostics

9216chevy04

Number: 91-64-6E

Section: 6E

Date: September 1990

Corporate Bulletin No.: 016530


Subject:
DRIVEABILITY AND EMISSIONS REVISED CODE 43


Model and Year:
1990-91 BERETTA ONLY WITH 2.3L (VIN CODE A) ENGINE
1990-91 LUMINA WITH 3.1L (VIN CODE T) ENGINE
1991 LUMINA WITH 3.4L (VIN CODE X) ENGINE








TO: ALL CHEVROLET DEALERS

This bulletin replaces current Code 43 Charts and Facing Pages in the Service Manual Section 6E3 "Driveability And Emissions" for the vehicle applications listed.

The diagnostic procedure should be used in conjunction with the appropriate service manual application to identify proper ECM connector terminal designation.

Models Affected:

1990-1991 2.3L VIN A "L" CARLINE (BERETTA ONLY)

1990-1991 3.1L VIN T "W" CARLINE

1991 3.4L VIN X 'W" CARLINE