Does anyone know how to troubleshoot the system? There are two fuel level gauges, the second listed as a sub level gauge. The main unit is under the passenger side shelf while the sub gauge is in the fuel tank on the driver side. Not sure which to go about fixing/replacing/adjusting. Also, do you think the 'last light doesn't illuminate' issue is just an adjustment to the floats rather than a gauge malfunction?
I may pull the shelves out and see what these fuel gauges look like myself. Seems easy enough.
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2013 Cadillac V-Wagon, RIP Z
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