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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1381 (Automatic Transmission - 2ML70 - DTC P0971 To DTC P279D) >> DTC P0973 or P0974 >> Conditions for Setting the DTC >> P0974

Conditions for Setting the DTC: P0974

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The control solenoid valve assembly detects an internal high voltage electrical malfunction of the shift solenoid 1 control circuit when shift solenoid 1 is commanded ON for 1 second.