A/T - Harsh/Delayed Engagement

89cadillac06

Bulletin No. T-89-101
File in Group 7
Number 201
Corp. Ref. No. 977102R
Date May, 1989



SUBJECT: PARK/NEUTRAL-TO-DRIVE ENGAGEMENT - THM 200-4R

MODELS AFFECTED: 1982-1989 RWD DE VILLES AND BROUGHAMS


This bulletin supersedes bulletin T-88-6, Group 7, which should be discarded.

1982-1986 Harsh and/or Delayed Engagement:

Some 1982-1986 RWD DeVilles and Broughams with THM 200-4R transmissions built before 1986 Julian Date 115 may experience a condition of harsh and/or delayed park/neutral-to-drive engagement. To repair this condition install a new neutral-to-drive shift package, P/N 8639970.

1986-1989 Delayed Engagement:

Some 1986-1989 Broughams with THM 200-4R transmissions built after 1986 Julian Date 114 and before 1989 Julian Date 237 may experience a condition of delayed park/neutral-to-drive engagement. To repair this condition use the following procedure:

1. Check for proper fluid level.

2. If OK, check the forward clutch and feed circuits for:

^ Cut or overlapping Teflon seal rings on forward clutch shaft.
^ Cracked or broken forward clutch piston.
^ Cut or rolled forward clutch piston seals.
^ Porosity in the center support.

3. If none of the above are found to be the cause, install a revised forward clutch housing assembly, P/N 8639969.