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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 933 (Automatic Transmission - ALLISON - DTC P0218 To DTC P0732) >> DTC P0634 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The transmission control module (TCM) is equipped with an internal temperature sensor mounted directly to the TCM circuit board. The TCM will take action to protect against damage from overheating.

DTC P0634 is a type B DTC.

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