Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. 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 .
Refer to Fuel Level Specifications in order to verify the correct readings for the fuel level sensor. The Fuel Tank Level Remaining % parameter is available on the scan tool in the PCM Enhanced EVAP data list.