2003 Chevy Monte Carlo The gas gage is not working properly

Tiny
WHORTON
  • MEMBER
  • 2003 CHEVROLET MONTE CARLO
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 38,000 MILES
When I first start the vehicle the gas gage reads full. It remains on full for about 2-3 minutes then immediately indicates an empty reading. I've filled the tank and driven about 300 miles with this condition so I think the fuel pump and sending unit are probably ok. However every garage including the dealer want to replace the sending unit at a cost of about $700 to $1000 dollars. If the fuel pump were defective I assume the vehicle would not run at all. I wish I could locate just one honest mechanic in my city.
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Wednesday, December 26th, 2007 AT 8:51 PM

1 Reply

Tiny
ROWTIEAR
  • MEMBER
  • 91 POSTS
The fuel pump and sending unit have been combined into a single module for a number of years now.
It is possible and in fact quite common for the sending unit to fail while the pump still works fine.
Unfortunately as I said they are combined into one module that has to be changed in it's entirety regardless of which part fails.
I do not believe your mechanic is trying to steer you wrong.
If you have a beef with someone it should be G.M. Not your local shop.
Hope this helps!
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Wednesday, December 26th, 2007 AT 9:05 PM

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