A/T - L/H Front Axle Seal Leak/A/T Slips in Gear
TECHNICALBulletin No.: 08-07-30-009A
Date: March 12, 2008
Subject:
HYDRA-MATIC(R) Front Wheel Drive 4T80-E (MH1) Left Front Axle Seal Leak, Transmission Slips in Gear (Replace Third Clutch Housing with Revised Service Part)
Models:
2001-2008 GM Passenger Cars
with HYDRA-MATIC(R) Front Wheel Drive 4T80-E Automatic Transmission (RPO - MH1)
Supercede:
This bulletin is being revised to change the location of the transmission fluid leak from the right front axle to the left front axle. Please discard Corporate Bulletin Number 08-07-30-009 (Section 07 - Transmission/Transaxle).
Condition
Some customers may comment on a transmission oil leak and/or that the transmission slips in gear.
Cause
An oil leak may be caused by bushing wear in the third clutch housing causing excessive fluid build-up at axle seal.
Correction
Important:
DO NOT replace the transmission for above concerns.
Replace the third clutch housing with service P/N 8682114 which has revised bushing material to extend life and reduce left front axle seal leaks. Refer to Automatic/Transaxle - 4T80-E Transmission Off-Vehicle Repair Instructions for the replacement of the third clutch housing in SI.
Parts Information
Warranty Information
For vehicles repaired under warranty, use the table.
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