Diagnostic Aids
WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
- Verify 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 Level Sensor parameter is available on the scan tool in the PCM data list.