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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1691 (Hybrid Controls - DTC P181C To DTC P2792) >> DTC P1AC6 or P1AC7 >> Conditions for Setting the DTC >> P1AC6

Conditions for Setting the DTC: P1AC6

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

The MCM detects no engine speed signal for 2 seconds.