We are currently running a 5 - 6 business day turnaround on repairs once we receive your unit and please note our September closure when sending your unit in for servicing. Please be advised: We will be closed for the entire month of September. During this time you can still send your unit in to get in line for servicing once we re-open on October 1st. 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.