Circuit/System Verification
WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
It is necessary to inform the OnStar® Call Center advisor that this call is for vehicle diagnostic purposes.
- Observe that the horn, lights, and the doors locks on the vehicle operate properly.
- If the applicable system does not operate properly, go to Diagnostic Starting Point - Horns or Diagnostic Starting Point - Lighting Systems or Diagnostic Starting Point - Vehicle Access respectively.
- Contact the OnStar® Call Center by pressing the blue OnStar® button. Verify with the OnStar® advisor that all of the remote functions (door locks, lights, or horn) work.
- If the remote functions do not work, use the scan tool to access the STID and ESN and contact the General Motors Technical Assistance Center.