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2005 GMC Envoy Gas Gauage

Tiny
BCPOSTMA
  • MEMBER
  • 2005 GMC ENVOY
  • V8
  • 4WD
  • AUTOMATIC
  • 58,775 MILES
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.
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Saturday, April 18th, 2009 AT 3:16 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,913 POSTS
It sounds like you may have a bad float in the fuel tank. Does the gauge read normal and correctly when it's working?
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Wednesday, July 1st, 2009 AT 9:01 PM
Tiny
BCPOSTMA
  • MEMBER
  • 2 POSTS
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.
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Monday, July 6th, 2009 AT 6:26 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,913 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.
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Monday, July 6th, 2009 AT 11:24 PM

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