2005 GMC Envoy Gas Gauage

2005 GMC ENVOY
58,775 MILES • V8 • 4WD • AUTOMATIC
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BCPOSTMA
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While driving down the road and acellerating the gas gauge goes to empty (just filled the tank yesterday) then it goes back to the normal position. It also will go to empty when I take the foot off the gas pedal, It only stays on empty for a couple of seconds before moving back to normal. I know its telling me something but not sure what. The engine runs and sounds normal. Does not stall.
Apr 18, 2009 at 3:16 AM
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JACOBANDNICKOLAS
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It sounds like you may have a bad float in the fuel tank. Does the gauge read normal and correctly when it's working?
Jul 1, 2009 at 9:01 PM
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BCPOSTMA
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yes the gauge reads normal. If we do not fill the tank all the way it is ok. If we fil it is when it seems we have the issue.
Jul 6, 2009 at 6:26 PM
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JACOBANDNICKOLAS
  • CAR REPAIR CONTRIBUTOR
  • 110,190 POSTS
My guess the float has a bad rheostat. The only problem is the float is part of the fuel pump and located in the fuel tank.
Jul 6, 2009 at 11:24 PM