EXPERTEC TSB (93-6E-17)

Publication date: 1993-06-29
Reference number: 93-6E-17

EXPERTEC TSB

TECHNICAL SERVICE BULLETIN

Reference Number(s): 93-6E-17, Date of Issue: 06/29/93

CHUGGLE - (NEW CALIBRATION - PROMS)

Model(s): All Models Equipped with a 5.7L V8 Engine (L05, VIN 7)

Bulletin No.: Chevrolet 93-258-6E

Oldsmobile 92-T-176

Buick 93-6E-17

Date: 06/29/1993

CONDITION

SOME OWNERS WITH VEHICLES LISTED BELOW, EQUIPPED WITH 5.7L V8 ENGINES (L05, VIN 7), MAY COMMENT ABOUT A "CHUGGLE" CONDITION.

THIS BULLETIN ADDRESSES THE FOLLOWING VEHICLE/CONDITION PROBLEMS ONLY:

VEHICLES INVOLVED

Vehicle - Body	Year(s)	Condition
BUICK - SEDAN + WAGON	1992-93	CHUGGLE WITH BASE AXLE ONLY
SEDAN WITH RPO GM8, 2.56 RATIO
WAGON WITH RPO GU2, 2.73 RATIO
CHEVROLET - WAGON	1992-93	CHUGGLE WITH BASE AXLE ONLY RPO GU2, 2.73 RATIO
OLDSMOBILE - WAGON	1992	CHUGGLE WITH BASE AXLE ONLY RPO GU2, 2.73 RATIO

CAUSE

INSUFFICIENT DAMPENING OF THE TORQUE CONVERTER AND PROM CALIBRATION.

CORRECTION

NEW CALIBRATION PROMS HAVE BEEN RELEASED TO ADDRESS THE ABOVE VEHICLE/CONDITION PROBLEMS.

THE FOLLOWING PROMS ARE NOT RECOMMENDED FOR VEHICLES WITH OPTIONAL AXLE RATIOS OR TRAILER TOWING PACKAGES.

VEHICLES PRODUCED FROM MID-JUNE 1993 THROUGH THE END OF THE MODEL YEAR ARE EXPECTED TO HAVE THIS PROM CHANGE. CHECK PROM SCAN ID.

SERVICE PROM INFORMATION

Emission System	Years	Axle Ratio/Body	Service PROM P/N	Scan ID	Broadcast Code
FEDERAL (NA5)	92-93	2.56 (GM6)/SEDAN	16195067	5131	BHHP
2.73 (GU2)/WAGON		16195067	5131	BHHP
CALIF. (NB2)	93	2.56 (GM8)/SEDAN	16195072	5141	BHHR
2.73 (GU2)/WAGON		16195072	5141	BHHR

VEHICLES WITH MODEL 2DDM TRANSMISSION - CHECK DEALER RECORDS TO SEE IF THE TORQUE CONVERTER HAS ALREADY BEEN REPLACED WITH P/N 8650935 (TAGGED B/C: DGAF). IT IS NOT NECESSARY TO REPLACE THOSE TORQUE CONVERTERS WITH P/N 8650935.

TRANSMISSIONS WITH TORQUE CONVERTERS WITH P/N 8656959 (TAGGED B/C: DG5F) NEED TO HAVE THE TORQUE CONVERTER REPLACED WITH P/N 8650935.

MODEL 2BRM TRANSMISSIONS (PRODUCED AFTER DECEMBER 16, 1991) HAVE THE NEW TORQUE CONVERTER.

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION

Labor Operation	Code	Time
REPLACE PROM	T0500	0.6 HOUR
REPLACE TORQUE CONVERTER	K7020	2.8 HOURS

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS ONLY. BULLETINS ARE WRITTEN TO INFORM THOSE TECHNICIANS OF A CONDITION POSSIBLY OCCURRING ON A VEHICLE, OR TO PROVIDE INFORMATION ASSISTING IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS, AND TRAINING TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THE BULLETIN APPLIES TO ALL VEHICLES. SEE AN AUTHORIZED GM DEALER FOR INFORMATION ON WHETHER A SPECIFIC VEHICLE MAY BENEFIT FROM THE INFORMATION.