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Old Apr 25, 2006 | 10:51 PM
  #1  
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Default fuel gauge

the other day my gas gauge dropped to empty but it came back on the next day;I'm sure it will happen again. If it stays that way and needs repair, what is involved and does extended warranty cover this? Thanks Doug
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Old Apr 25, 2006 | 11:04 PM
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There are a number of possibilities...
1. a fouled fuel sending unit.... add a good fule system cleaner like Techron or Chemtool B-12
and switch to a top tier gasoline www.toptiergas.com

2. corroded ground for the sending unit

3. faulty sending unit

Try the fuel system cleaner and switch gasolines
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Old Apr 25, 2006 | 11:38 PM
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http://forums.corvetteforum.com/show....php?t=1369756

http://forums.corvetteforum.com/show....php?t=1374864


Various extended warranties differ on what they cover. You would just have to check with your warranty company to see what they cover.

Good luck.
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Old Apr 26, 2006 | 12:10 AM
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Techron gas treatment worked for me.
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Old Apr 26, 2006 | 12:27 AM
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Chevron Supreme, it has techron. Cured my faulty gauge.
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Old Apr 26, 2006 | 12:35 AM
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As soon as this happened to me I started putting in Techron. Cured the problem right away. Keep a few bottles at home, it is easier than having your gas tanks removed.
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Old Apr 26, 2006 | 12:43 AM
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Answers are just 2 threads down...

http://forums.corvetteforum.com/show....php?t=1369756
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Old Apr 26, 2006 | 01:19 AM
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I'm on the Chevron bandwagon. I've tried several times going to a cheaper gas and the problem comes back within a couple tanks. Now the only time I use anything else is if Chevron isn't available.
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Old Apr 26, 2006 | 06:56 AM
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Try running a bottle or two of Techron through the tank. Seems to work well in helping cure the erratic fuel gauge problem.
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Old Apr 26, 2006 | 03:56 PM
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Thanks for the great wisdom of the forum and I will try the Techron. It has only happened once. I don't recall any Chevron stations around.
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Old Apr 26, 2006 | 04:11 PM
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Originally Posted by EnglandGreen
I, too, have had to replace the fuel sending unit assembly, AND, have had the proper "reflashing" to the PCM. And, I have found the least problems (continued erratic fuel gauge readings) when imposing a strict diet of only Chevron Premium with regular Techron II maintenance.

Last edited by edensknight; Apr 26, 2006 at 04:14 PM.
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Old Apr 26, 2006 | 06:40 PM
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Extended GM Warranty replaced my sending units and all has been well for the past 2yrs.
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Old Apr 26, 2006 | 06:45 PM
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Where exactly is the fuel sending unit?
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Old Apr 26, 2006 | 06:51 PM
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Driver's side gas tank - http://forums.corvetteforum.com/show....php?t=1369756
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Old Apr 26, 2006 | 07:53 PM
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Originally Posted by doug doo wop
Thanks for the great wisdom of the forum and I will try the Techron. It has only happened once. I don't recall any Chevron stations around.
Trust me if it happened once it will happen again. Get yourself a couple bottles of Techron from the auto parts store.
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Old Apr 26, 2006 | 09:32 PM
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Last August at Corvettes at Carlisle, I got a chance to ask one of the GM engineers about the gas gage issue. He said the problem was excessive sulfur in some fuels that was leaving a film on the sending units, which in turn would cause erractic failure.

The GM engineer reccomended (2) bottles of Techron. I did what he suggested and hav enot had a problem since.

BTW, Costco sells Techron 4-pack for about $10.

Good luck.
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