Test Description

The numbers below refer to the step numbers on the diagnostic table. See Fig 1 and Fig 2 .

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

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

Courtesy of GENERAL MOTORS CORP.

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

Courtesy of GENERAL MOTORS CORP.