Question about Cars & Trucks
How to repair faulting gas gauge?
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Posted on Jan 02, 2017
See GM TSB 05-08-143-001, If you have Adjustable pedals, especially if they don't work with the memeory buttons, but function with thier own buttons. Its the Brake Pedal Position Sensor is shorted and mesing up the seat module which controls the heaters too. My 05 Suburban had the same issue
Posted on Dec 11, 2009
Your sending unit for the guage is part of your fuel pump in the tank. But first try your fuel pump relay, may be working intermittenly when you hit a bump or something. Or possibly a loose wire somewhere along the way. Much less expensive (worth a look).
Posted on Dec 18, 2009
I have the same thing happen to me. have 2004 GMC Serria 5.3, Engine is not hot. gauge now pointing down - straight down. replaced engine sensor but did not fix problem. I now believe it is the gauge. still troubleshooting. Initial problem indicated a rise in tempature, so I stopped and looked at engine, not hot- plenty of water, hose can hold, drove around some more, then gauge started to climb, stopped again had mechanic check, he had heat sensor and checked engine temp, pretty normal. suspected sensor so replaced. when engine is cold still gauge points straight down.
Posted on Jan 08, 2010
It is most likely your fuel level sending unit has gone bad. It sits inside your fuel tank to tell the fuel guage how much gas you have in the tank.
The sending unit for the gas gauge is in the fuel tank and part of the fuel pump module, it is not sold seperately. Price is around $350.00, 2 hours labor to install the part.
Posted on Feb 18, 2010
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