For 1990-2009 cars

# SMU - SECTION 63E DRIVEABILITY AND EMISSIONS

#### SUBJECT: SERVICE MANUAL UPDATE - SECTION 6E3 - DRIVEABILITY AND EMISSIONS

#### MODELS: 1993 BUICK LESABRE, PARK AVENUE, RIVIERA, REGAL 1993 CHEVROLET LUMINA APV 1993 OLDSMOBILE EIGHTY EIGHT, NINETY EIGHT, SILHOUETTE 1993 PONTIAC BONNEVILLE, TRANS SPORT WITH 3800 ENGINE (VINS L, 1 - RPOS L27, L67)

THIS BULLETIN REVISES SERVICE MANUAL SECTION 6E3, "DRIVEABILITY AND EMISSIONS". THE CRANKSHAFT SENSOR IS NO LONGER ADJUSTABLE AND THE HARMONIC BALANCER HAS BEEN REVISED. SPECIAL TOOL J-37089 CAN NO LONGER BE USED TO CHECK CRANK SENSOR POSITION OR HARMONIC BALANCER "INTERRUPTER RINGS". PLEASE REMOVE ALL REFERENCES TO THE J-37089 TOOL FOUND ON THE FOLLOWING PAGES:

1993 CHEVROLET, PONTIAC AND OLDSMOBILE U VAN 3800 (VIN L)....................6E3-C4 - 5 6E3-C4 - 8 6E3-C4 - 9 FIG C4-8

1993 BUICK, OLDSMOBILE C/H 3800 (VIN L)......................6E3-C4 - 5 6E2-C4 - 8 6E3-C4 - 9 FIG C4-8

1993 PONTIAC H 3800 (VIN L)........................6E3-C4 - 5 6E3-C4 - 8 6E3-C4 - 9 FIG C4-8

1993 BUICK E 3800 (VIN L)........................6E3-C4 - 5 6E3-C4 - 8 6E3-C4 - 9 FIG C4-8

1993 BUICK W 3800 (VIN L)........................6E3-C4 - 5 6E3-C4 - 8 FIG C4 - 8 6E3-C4 - 9

1993 PONTIAC H 3800 (VIN L)........................6E3-C4 - 5 6E3-C4 - 8 FIG C4-8 6E3-C4 - 9

1993 BUICK, OLDSMOBILE C/H 3800 (VIN 1)......................6E3-C4 - 5 6E3-C4 - 8 FIG C4-8 6E3-C4 - 9

FIGURES: 0

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 1993 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.