Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 GMC Sierra 3500 HD, 2015 GMC Sierra 2500 HD, 2015 GMC Sierra 1500, 2015 Chevrolet Silverado 3500 HD, and 2015 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Verify that no DTCs are set, except DTC P0575.
- If any other DTC is set, except DTC P0575
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If only DTC P0575 is set
Replace the K9 Body Control Module.
Verify DTC P0575 does not set when operating the vehicle within the Conditions for Running the DTC.
- If the DTC sets
  Replace the K20 Engine Control Module.
- If the DTC does not set
All OK.