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May 1, 2012 Service bulletin

Gmc/chevrolet: malfunction indicator lamp (MIL) is illuminated and has a harsh shift 1-2

Chevrolet technical service bulletin PIP-5009-D for 2012 Chevrolet Silverado, 2012 GMC Sierra and 2012 Chevrolet Colorado and others.

Bulletin number
PIP-5009-D
Component
Power train: automatic transmission: control module (TCM/PCM/tecm)
Summary
Gmc/chevrolet: malfunction indicator lamp (mil) is illuminated and has a harsh shift 1-2. The tcc enable solenoid and wire harness should be replaced when repairs are performed on transmission.

Owners of these vehicles have filed 24 complaints in the transmission category.

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