Circuit/System Testing

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON.
Verify that C0500-C0504, C0506-C0510, C0512-C0516, C050A, or C050C-C050F is not set in the EBCM.
- If any listed DTC is set
  Refer to DTC C0500-C0504, C0506-C0510, C0512-C0516, C050A, or C050C-C050F to diagnose that DTC prior to this diagnostic.
- Go to next step: If any listed DTC is not set
Replace the K17 Electronic Brake Control Module.
Verify the DTC does not set while operating the vehicle under the Conditions for Running the DTC.
- If the DTC sets
  Replace the module that set the DTC.
- Go to next step: If the DTC does not set
All OK.