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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 187 (Instrument Panel System Displays & Gages) >> Diagnostic Information and Procedures >> Fuel Gage Inaccurate or Inoperative (Dual Tank) >> Component Testing

Component Testing

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  1. Ignition OFF, remove the primary and secondary fuel level senders.
  2. While sweeping the primary fuel level sensor through its full range of motion, test for a minimum value less than 41 ohms and a maximum value greater than 119 ohms between the signal terminal C and the low reference terminal B.
    • If not within the specified range, replace the primary fuel level sensor.
  3. While sweeping the secondary fuel level sensor through its full range of motion, test for a minimum value less than 41 ohms and a maximum value greater than 119 ohms between the signal terminal C and the low reference terminal B.
    • If not within the specified range, replace the secondary fuel level sensor.
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