Engine Controls - Manual Update Revised DTC 42 Chart

Group Ref.: Engine Fuel & Emission
Bulletin No.: 316516
Date: January, 1994:

SERVICE MANUAL UPDATE

SUBJECT:
SECTION 6E3 - DRIVEABILITY AND EMISSIONS

MODELS:
1992 BUICK PARK AVENUE, LESABRE, RIVIERA
1992 CHEVROLET LUMINA APV
1992 OLDSMOBILE NINETY EIGHT, EIGHTY EIGHT, TORONADO, TROFEO, SILHOUETTE
1992 PONTIAC BONNEVILLE, TRANS SPORT
WITH 3800 ENGINE (VINS L AND 1)





This bulletin updates the code 42 Diagnostic Chart in Service Manual Section 6E3, "Driveability and Emissions". The revised diagnostic chart includes the correct terminal location for bypass CKT 424 at the PCM.