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Flickering gauages please help

Tiny
BIGV8JOE
  • MEMBER
  • CHEVROLET TAHOE
I have a 1999 2 door tahoe with 160000 miles on it. The problem started with a noisey fuel pump. Everytime the fuel pump would whine the volts would move up. Also my fuel gauge has flickering. I have replaced the fuel pump. Noise has stopped but the gauges are still flickering. I had the altanater checked it was good I replaced the belt still no change. Im stumped on what to do next.
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Saturday, July 28th, 2007 AT 11:40 AM

3 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
When you say flickering do you mean the lighted part or the gauges move back and forth fast?
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Monday, July 30th, 2007 AT 7:59 AM
Tiny
BIGV8JOE
  • MEMBER
  • 3 POSTS
Yes the fuel gauge move back and forth real fast almost like a vibration and the volts moves back and fourth between 14 and 19 like a pulse.
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Monday, July 30th, 2007 AT 2:08 PM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
I have seen the fuel gauges do that, replaced the gauge and all was alright. The volt gauge, check with a meter for steady system voltage at the alt and at any power points.
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Monday, July 30th, 2007 AT 3:56 PM

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