possible bad ground
1993 chevy 4.3 v6 1500 truck temp gauge inoperative,
Fuel tank sending unit. Fuse.
Bad gauge, bad sending unit, bad wiring.
Chevy's are known for this problem, i just recently had the same problem and what you need to do is replace the fuel sending unit. My original problem had to do with my fuel pump not working and i wasn't really worried about the gauge but we figured since we had the tank down we might as well swap the sending unit and my gauge starting working. Good luck
try replacing the thermostat
HUH???????????????????????????
Change your fuel sending unit.
what is the preceger for replacing the head gaskets on a 1993 chevy suburban 4x4 350
bad temp sender usually. Bad gauge rarely.
Hey William==This means that the gauge on the dash isn't getting a signal from the sending unit. The sender is either not plugged in or there is a break in the wire somewhere. GoodluckJoe
Ground the wire that goes to the temperature sending unit and if the gauge goes up then the sending unit is defective.
fuel gage sending unit inside the fuel tank