Fuel gauge

Asked by GuruP1L2M Jan 22, 2020 at 12:46 AM about the 2008 GMC Sierra 1500 SLE2 Crew Cab

Question type: Maintenance & Repair

My trucks gas gauge won’t work when it’s
rainy but works fine when dry

1 Answer
103,215

KenF answered 4 years ago

The sending unit is part of the fuel pump assembly. If the gauge stops working then you have an electrical open somewhere along that circuit that's being caused by moisture. Crawl along the frame looking at the wire harness coming from the tank for abrasions or other signs of bad wiring.

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