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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1048 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0971) >> DTC P0751 >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The following fault table will help determine if a hydraulic circuit or an incorrect position or application of a component affects the transmission operation.

Component Cause DTCs
Lower Control Valve Body Clutch select valve 2 stuck - debris, sediment, binding or scored bore P0751
Control Solenoid (w/body and TCM) Valve Assembly Clutch Pressure Control Solenoid 2:
  • Not exhausting - Stuck OFF
  • Needle piston or armature pin binding
  • Control signal fluid supply leak - valve body filter plate assembly cracked or damaged gasket seal
  • O-ring seals leaking
P0751