Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- With a scan tool, clear DTC C0550. The DTC should clear.
- If the DTC will not clear, replace the control module.
- Ignition OFF, remove the scan tool, open and close the drivers door.
- Wait 60 seconds, ignition ON, then recheck for DTCs. DTC C0550 should not set.
- If DTC C0550 sets, replace the module.