Calais L4-151 2.5L VIN U TBI (1989)
Clutch: All Technical Service Bulletins
A/T - Slips in Reverse/No Reverse
SUBJECT
SLIPS IN REVERSE AND/OR NO REVERSE (LO-
REVERSE PISTON SNAP RING LOCATION
INFORMATION)
MODELS/YEARS
1989-90 CUTLASS CALAIS AND CUTLASS CIERA, 1990
CUTLASS SUPREME AND SILHOUETTE EQUIPPED WITH HYDRA-MATIC 3T40 (THM 125C) TRANSAXLE (RPO -
MD9)
NUMBER:
90-T-23
CORP.REF.NO: 977149
DATE:
November 1989
SECTION:
7A
Figure 1
BULLETIN COVERS:
Incorrectly installed Lo-Reverse Piston Snap Rings (657) that may cause a Slip in Reverse and/or no Reverse condition.
SERVICE PROCEDURE:
Refer to Figure 1
Whenever installing the Lo-Reverse Clutch piston snap ring (657), the step on the outside diameter of the snap ring must be positioned toward the
Lo-Reverse Clutch retainer (656). The retainer must rest inside the snap ring to allow proper piston travel.
If the snap ring is installed backwards with the step facing the splines on the hub, the retainer may limit travel of the piston and may result in a durability
