Fuel gauge problem
12-27-2005, 09:41 AM
#1
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Fuel gauge problem I have a 99 c5 stock and for some reason when the fuel gets down to about a 1/4 of a tank left the low fuel light comes on and then the gauge drops all the way down to empty and stays there till i shut the car off and turn it back on. What would be causing this?
12-27-2005, 10:03 AM
#2
Originally Posted by Stingray99
I have a 99 c5 stock and for some reason when the fuel gets down to about a 1/4 of a tank left the low fuel light comes on and then the gauge drops all the way down to empty and stays there till i shut the car off and turn it back on. What would be causing this?
Several C5 owners have this problem... There are a number of fixes, but I am not sure any one is the "end all" fix... I started using only Chevron/Techron gas and the problem (which was constant) has went away... Some have had the sending unit replaced... others have mentioned the software fix (which I got also and it did not fix the problem)...
Good Luck,
01-02-2006, 03:45 PM
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Yep. Very common/documented problem. GM attributes it to sulphur content in certain fuels. Here's a link to some TSB's:
http://corvetteactioncenter.com/kb/c...y.php?catId=77
http://corvetteactioncenter.com/kb/c...y.php?catId=77
01-06-2006, 08:13 AM
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I replaced the sending unit in my '00 model and the current owner said it happened again. I tend to think that it's a gas issue. And mine would do it with well over a 1/2 tank of fuel left. Freaked me out the first time it happened. So far I've run nothing but Chevron and Exxon in my Z with no fuel issues as of yet.
