thunderstruck
Babuinos Móviles
Never owned a GMT800 then I guess?I have never had an issue with gauges on any chevy I have ever owned, but I am kind of hoping that is the case.
First, do you know that the truck isn't overheating? Have you tried a mechanical water temp gauge or an infrared gun? Just saying.
Also, check your ground wires. There are two braided straps near the A/C accumulator that go from frame-to-body and body-to-motor. There's also several wires on and near the thermostat housing.