Diagnostic Aids
WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. 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 WIRING SYSTEMS FOR INTERMITTENT & POOR CONNECTIONS in Wiring Systems.
- Refer to FUEL LEVEL SPECIFICATIONS in order to verify the correct fuel level sensor readings. The Fuel Level (%) parameter is available on the scan tool in the PCM data list.