Lumina V6-204 3.4L DOHC (1991)
Clutch: Customer Interest
A/T - Delayed Engagement In Drive/Reverse
Number:
92-67-7A
Section:
7A
Date:
DEC. 1991
Corporate Bulletin No.: 107105R
ASE No.: A2
Subject: DELAYED ENGAGEMENT IN DRIVE/REVERSE
Model and Year: 1991-92 LUMINA AND LUMINA (APV) WITH 4T60/4T60E AUTOMATIC TRANSMISSION
The above condition could be caused by a rolled or cut input clutch piston outer seal. The initial comment is often a delay in drive cold. The condition
will sometimes develop into a no/delay drive or reverse cold and delay hot over a 2000-5000 mile range. If this condition is encountered, it is
recommended that the input clutch piston outer seal be replaced.
NOTE: An air check of the piston as a diagnostic aid could be misleading.
Refer to the service manual diagnostic section for other causes of delayed engagement. GM Powertrain is currently performing a root cause analysis on
this condition.
