Visual/Physical Inspection
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect for aftermarket devices that could affect the operation of the serial data communications systems. Refer to CHECKING AFTERMARKET ACCESSORIES .
- Inspect the easily accessible systems or visible system components for obvious damage or conditions that could cause the symptom.