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March 1, 2008 Service bulletin

Hydra-matic 4T65-E (M15) automatic transmission harsh shift, sets false DTC P1811 (reprogram TCM)

Pontiac technical service bulletin 08-07-30-013 for 2007 Pontiac Montana, 2007 Chevrolet Uplander and 2007 Buick Terraza and others.

Bulletin number
08-07-30-013
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
Hydra-matic 4t65-e (m15) automatic transmission harsh shift, sets false dtc p1811 (reprogram TCM). Nj

Owners of these vehicles have filed 11 complaints in the transmission category.

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