1999 Chevrolet Tahoe Fuel gauge sending unit

Tiny
DCKY320
  • MEMBER
  • 1999 CHEVROLET TAHOE
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 157,000 MILES
I have been working on my 99 chevy tahoe for a while. I recently replaced the fuel pump with a new Airtex unit with a new wiring harnes. It doesn't seem like the float is working correctly. I have a 30 gallon tank in it but when it get down to about 10 to 12 gallons left in the tank my gauge will be into the red zone just about on E after only about 240 miles. I have been averaging between 12.5 and 13 miles to the gallon. Then when I fill it it only takes 19 to 20 gallons and the gauge stays on E for some time after it is filled. What could be wrong?
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Wednesday, May 6th, 2015 AT 11:49 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
It sounds like you may need to remove the pump and check if there is something hanging up the float, if it isn't floating, or there is a problem with the rheostat itself.
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Thursday, May 7th, 2015 AT 5:36 AM

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