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.
- Ensure that the fuel level is in the same range as the customer concern.
- For intermittent diagnosis, refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.
- Refer to FUEL LEVEL SPECIFICATIONS in order to verify the correct fuel level sensor readings. The Fuel Tank Level Remaining parameter is available in the scan tool in the PCM data list.