In this video, Classic Truck Specialist Dave Welch shows us how to diagnose and repair problems with a non-functional or finicky Fuel Gauge on Chevrolet & GMC Pickups. Dave explains how the system works and what to look for when repairing the function of your gas gauge. He'll take us from the fuel tank and sending unit, through the wiring and all the way to the dash and gauge itself. If you've got a fuel gauge that gives you problems or doesn't work at all, then this is the how-to video for you!