Calais L4-151 2.5L VIN U TBI (1989)
Clutch: All Technical Service Bulletins
A/T - 2-3 Slip or Flare/Delayed 2-3 Upshifts
SUBJECT
2-3 SLIP OR FLARE AND/OR DELAYED 2-3 UPSHIFTS
DURING LIGHT THROTTLE
MODELS/YEARS
1988-89 FIRENZA, CUTLASS CALAIS OR CUTLASS
CIERA EQUIPPED WITH 125C/HYDRA-MATIC 3T40 TRANSAXLE (RPO-MD9)
NUMBER:
89-T-62
CORP.REF.NO: 977110
DATE:
April 1989
SECTION:
7A
BULLETIN COVERS:
New Fiber Plates which have a smooth surface that will reduce the potential for a 2-3 Slip, 2-3 Flare and/or Delayed 2-3 Upshifts during Light Throttle
acceleration.
DATE OF PRODUCTION CHANGE:
Fiber plates for the Direct Clutch Assembly with the new smooth surface went into production February 27, 1989 (Julian Date 058) for all THM
125/125C/HYDRA-MATIC 3T40 transaxles.
SERVICE NOTES:
This bulletin only pedains to THM 12SC/HYDRA-MATIC 3T40 transaxles equipped with grooved fiber plates in the Direct Clutch Assembly, built
before February 27, 1989 (Julian Date 058).
SERVICE ACTION:
To service any THM 125/125C/HYDRA-MATIC 3T40 for this condition replace the grooved (existing) fiber plates wfth the new smooth surface fiber
plates. Grooved fiber plates are optional in the Direct Clutch assembly for the above model years.
SERVICE PARTS INFORMATION:
Refer to the following part number whenever ordering fiber plates for the Direct clutch assembly.
Package Description
Part No.
Fiber Plates (smooth)
8643741
Parts are currently available from GMSPO.
SERVICE MANUAL REFERENCE:
Whenever service to the Direct clutch assembly is necessary, refer to the THM 125C/HYDRA-MATIC 3T40 Unit Repair Section of your Service
Manual.