Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

1. 3. This step tests for a high resistance in the signal circuit and the low reference circuit of the fuel level sender.
2. 13. DTCs will be set in the PCM when you perform this diagnostic table.

Fig 1: Fuel Gage Inaccurate Or Inoperative Diagnosis (Steps 1-4)

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Fig 2: Fuel Gage Inaccurate Or Inoperative Diagnosis (Steps 5-13)

Courtesy of GENERAL MOTORS CORP.