Diagnostic Aids
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.
The DIC displays dashes (- -) when there is a fault in the class 2 serial data circuit. This occurs only during the following modes:
- Average Fuel Economy
- Average Speed
- Fuel Used
- Instant Fuel Economy
- Trip Range
The compass display and the temperature display still operate normally when there is a fault in the class 2 serial data circuit. In this case refer to SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in Data Link Communications for diagnosis.