2000 corvette fuel gauge issue
Thread Starter
2nd Gear
Joined: Jun 2022
Posts: 2
Likes: 0
2000 corvette fuel gauge issue
I bought a 2000 c5 corvette hard top convertible from a guy who bought it new and rarely used it. It has around 30,000 miles. Everything runs well on the car just had to replace the alternator and the ac compressor. Ever since I bought it when I go on long trips after the first hour of straight driving the fuel gauge needle goes from full to empty in an instant and it will stay like that for a while until I turn on and off the car a few times. It only happens after like an hour+ of straight driving. Does anyone have any suggestions what it can be?
Melting Slicks
Joined: Sep 2008
Posts: 3,138
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From: Espanola New Mexico
Most likely fuel tank sending unit has build up of deposits, very common problem on our cars. Run a couple of Techron complete fuel system cleaner on your next fill ups and use only top tier primeium gasoline.
1st Gear
Joined: Jun 2022
Posts: 1
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I replaced the two fuel sending units, even did a full fuel system clean at the Chevy Dealership. It fixed my problem and i'm sitting at 150k miles. Hitting it with some Techron or Seafoam like the guys said doesn't hurt to try man!
Race Director
Joined: Oct 2004
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This is not a scientific test, but Shell Premium seems to work best in my 99. Exxon is also very good.