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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1737 (Automatic Transmission - ALLISON - DTC P0218 To DTC P0878) >> DTC P0877 or P0878 >> Conditions for Setting the DTC >> P0878 Condition 2

P0878 Condition 2

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The TCM detects that the PS4 signal remains high for 25 to 60 seconds, depending on the transmission fluid temperature, when engine shutdown is in process.

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