Test Description

The number below refer to the step number on the diagnostic table.

1. 3)  - This step tests for 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 (Single Tank) Diagnosis (Steps 1-3)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Fuel Gage Inaccurate or Inoperative (Single Tank) Diagnosis (Steps 4-11)
Courtesy of GENERAL MOTORS CORP.
Fig 3: Fuel Gage Inaccurate or Inoperative (Single Tank) Diagnosis (Steps 12-13)
Courtesy of GENERAL MOTORS CORP.