I had the same problem. tank is full, reads empty. its an intermittent problem with teh sending unit in the tank. its about a 200 dollar repair. My problem went away on its own and only happened when tank was very full or weather was cold. i dont believe it is individually fuse protected.
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There would be a fuse, but if your temperature gauge is working, then the fuse is not the problem. Probably a fuse labeled "meter" or "gauges" fuse.
In most cases a failed fuel gauge is either a bad gauge or a bad sending unit inside the gas tank, and in 80 or 90% of the cases it is a bad sending unit, not the gauge itself.
There is a way to test which it is, but you need to know which wire at the fuel tank connector is for the sending unit. What one does is just briefly ground this wire to the frame with the key in on. If that causes the needle on the gauge to move, then you know the sending unit has the problem, not the gauge.
The first thing you should do when troubleshooting fuel gauge problems is to ensure that all of the wires and connections are clean, free of corrosion, and secure. If this does not fix the problem, check the fuse for the fuel gauge. If the fuse is not the problem, ensure that the sending unit is correctly grounded. Next join the connector of the sending unit to the ground. If the fuel gauge begins to work, the sending unit has gone bad and needs to be replaced.
Well Sarah, the fuel sending unit is built onto the pump, which is located in the tank. It is common for a tooth to break off of the reastat (sp) part of the sending unit. You will have to replace the pump assembly which requires dropping the fuel tank. Hope this helps, TJ
As long as the car is running fine it's safe to say the fuel pump does not need to be replaced. However the fuel tank sending unit may need to be replaced assuming the fuel gauge itself isn't at fault. First check your owners manual if available for your fuse block info and check fuses then I'd look into the sending unit. Let me know if you need help with that
You may have a faulty fuel sending unit and the bad news is, that unit is in the fuel tank. GM has had a problem with these units and many times this has been the fix. Go to Walmart and buy 2 or 3 bottles of Techron. It is an additive for your fuel tank. It has cleaning agents that help remove the sulpher deposits which were corroding some of the fuel sending units in the tank. Run a few tankfulls of this thru your SUV. If your Equinox is out of warranty I would try this before anything.
the fuel level sending unit has been incorporated into the fuel pump assembly.
the fuel pump is most likely your problem, these pumps dont like fuel additives so be careful.
most common problem with these fuel gauges is the sending unit, the sender contacts will errode over time fuel additives seem to speed the process.