TSB 08-07-30-009B (S: A/T - 4T80-E (MH1) Left Front. Axle Seal Leak, Slipping

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TECHNICAL Bulletin No.: 08-07-30-009C Date: February 04, 2013 Subject: (R)HYDRA-MATIC 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 Equipped with HYDRA-MATIC(R) Front Wheel Drive 4T80-E Automatic Transmission (RPO MH1) Supercede: This bulletin is being revised to update the Warranty Information. Please discard Corporate Bulletin Number 08-07-30-009B (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 in SI for the replacement of the third clutch housing. Parts Information Warranty Information For vehicles repaired under warranty, use the table above. Disclaimer