SMU - SECTION 3A DRIVEABILITY EMISSIONS. GMC Truck S15 Pickup - 4WD 1994

For 1990-2009 cars

# SMU - SECTION 3A DRIVEABILITY EMISSIONS

#### SUBJECT: SERVICE MANUAL UPDATE-SECTION 3A-DRIVEABILITY, EMISSIONS AND ELECTRICAL DIAGNOSIS-TEXT DELETION

#### MODELS: 1994 CHEVROLET, GMC S/T TRUCKS WITH 2.2L GASOLINE ENGINE (VIN 4 - RPO LN2) AND 4.3L ENGINE (VINS Z, W - RPOS LB4, L35)

1994-1995 CHEVROLET AND GMC TRUCK C/K, M/L, G, P3, PG TRUCKS WITH 4.3L GASOLINE ENGINE (VIN Z - RPO LB4), 5.0L ENGINE (VIN H - RPO L03), 5.7L ENGINE (VIN K - RPO L05) AND 7.4L ENGINE (VIN N - RPO L19)

1994-1995 CHEVROLET AND GMC TRUCK C/K, G AND P3 TRUCKS WITH 6.5L DIESEL ENGINE (VINS F, P, S - RPOS L65, L49, L56)

THIS BULLETIN CONTAINS REVISIONS TO THE "DRIVEABILITY, EMISSIONS AND ELECTRICAL DIAGNOSTIC SERVICE MANUALS FOR THE FOLLOWING PAGES:

1994 S/T TRUCK-3A-5 1994 1995 G VAN-3A-4 1994-1995 C/K TRUCK-3A-4 1994-1995 M/L TRUCK-3A-4 1994-1995 PG/P3 TRUCK-3A-4 1994-1995 C/K, G, P TRUCK-3-17 AND SUPPLEMENT

THIS TEXT IS TO BE DELETED: THE REPLACEMENT PCM MAY BE FAULTY - AFTER THE PCM IS REPLACED, THE SYSTEM SHOULD BE RECHECKED FOR PROPER OPERATION. IF THE DIAGNOSTIC CHART AGAIN INDICATES THAT THE PCM IS THE PROBLEM, SUBSTITUTE A KNOWN GOOD PCM.

FIGURES: 00 ATTACHMENTS: 00

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.