NOTICE: We will be closed from February 3rd thru the 11th. For a quick turnaround we will need to have repairs in by Friday the 30th and repairs sent in after the 11th may not be completed until we reopen on the 12th. The office will still be open to receive packages during our closure dates so your repairs can still be sent in during this time and we will service them in the order that they are received. Please retain a copy of your tracking number when shipping your unit in to us for repairs since we do not send out notifications of your packages arrival.
Faulty sender units are common to some GM vehicles, but generally speaking will start malfunction at the same fuel level every time due to wear at the sender grid.
Also, you may get a fault trouble code which is usually an indication of a faulty sender or circuit.
A malfunctioning gauge esp. on some GM vehicles will be stuck and not move at all or be off the scale altogether.