Visual/Physical Inspection
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. 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 in Wiring Systems.
- Inspect the easily accessible systems or visible system components for obvious damage or conditions that can cause the symptom.