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September 14, 2022 Service bulletin

Power train: automatic transmission: control module (TCM/PCM/tecm)

Chevrolet technical service bulletin PIP5621C for 2015-2022 Chevrolet Malibu, 2015-2022 Chevrolet Silverado 1500 and 2015-2020 Chevrolet Impala and others.

Bulletin number
PIP5621C
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.

Owners of these vehicles have filed 8,609 complaints in the transmission category.

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