Circuit/System Verification
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.
Note: Verify the correct replacement part number.
- Ignition - On/Vehicle - In Service Mode
- Button Pressed@Transponder Key
- Verify DTC B3106 is not set.
- If the DTC is set
Replace the component: K77 Remote Control Door Lock Receiver
- Go to next step: If the DTC is not set
- If the DTC is set
- All OK.