Circuit/System Verification
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- It is necessary to inform the OnStar® Call Center advisor that this call is for vehicle diagnostic purposes.
- It is necessary to have the vehicle in an open outside area where a cellular call can be successfully placed and GPS data can be received from satellites.
- Ignition ON/vehicle in Service Mode.
- Verify that the horn, lights, and the door locks on the vehicle operate properly.
- If an applicable vehicle system does not operate properly
Refer to Diagnostic System Check - Vehicle .
- If all applicable vehicle systems operate properly
- If an applicable vehicle system does not operate properly
- Verify that a call can be successfully placed to the OnStar Call Center by pressing the blue OnStar button.
- If unable to contact the OnStar® call center
Refer to Unable to Contact OnStar Call Center
- If able to contact the OnStar Call Center
- If unable to contact the OnStar® call center
- Verify with the OnStar advisor that all remote functions (door locks, lights, and horn) work.
- If the remote functions do not operate when requested
Replace the K73 Telematics Communication Interface Control Module
- If the remote functions operate when requested
- If the remote functions do not operate when requested
- All OK.