Question about 1989 Chevrolet Suburban
Fuel gauge goes past full
There is always a small percentage that you have a electrical short, but 90% of the time it will be a FUEL SENDING UNIT, not to be confused with the fuel pump. Check your electrical, Especially the ground wire near; on top of the fuel sending unit which is conviently located on the TOP of your fuel tank, Sorry for the bad news, but you're going to have to drop the tank. Since yo're down there, best to replace the fuel pump since it's all right there in front of you.
Posted on Dec 06, 2012
Could be a faulty sending unit or gauge. Someone would need to unplug the sending unit at the tank and test the circuit.
Posted on Dec 06, 2012
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Posted on Jan 02, 2017
i'll tell you exactly what it is my 92 blazer 1500 did the same thing its the ground wire that goes to the sending unit its either broken,or just rusty it should be bolted to the cross member rite above the rear axle check it out and good luck
Posted on Aug 30, 2012
Common problem on the 03-06 Silverado instrument clusters for the fuel gauge to go out. It's usually caused by one of two main problems, either the stepper motor on the cluster's circuit board is going out or the sending unit on the fuel pump is going out. Check out this blog post about the problem - Silverado fuel gauge problems
Posted on Sep 30, 2010
USSUALLY WHEN GAGE GOES WAY OVERFULL IT'S A BAD GROUND
QUICK CHECK USE BOOSTER CABLE ONE END ON TANK OTHER END ON BATTERY NEGATIVE IF GAGE GOES OK MAKE UP SHORT WIRE FROM FRAME TO TANK SEEM LIP
AND ATTACH MAKE SURE METAL IS CLEAN
Posted on Apr 19, 2011
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