A/T - Delayed Engagement In Drive/Reverse

9215oldsmobile01

NUMBER: 92-T-21

CORP.REF.NO: 107105

DATE: December 1991

SECTION: 7


SUBJECT: DELAYED ENGAGEMENT IN DRIVE/REVERSE - REPLACE INPUT CLUTCH PISTON OUTER SEAL


MODELS/YEARS: 1991-92 CUTLASS CIERA, CUTLASS SUPREME
EIGHTY EIGHT, NINETY EIGHT, TORONADO AND
SILHOUETTE EQUIPPED WITH HYDRA-MATIC 4T60
OR 4T60E TRANSAXLES (RPO-ME9, M13)


The condition mentioned in the title of this bulletin 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.