If all the connections and wiring look good, it is probably the fuel gauge sending unit in the fuel tank.
Is the engine running ? no
Put a TV in it Also, if you have a built in gps in the car, that might take up the DVD slot so remove the navigation DVD
The sending unit in the gas tank is bad.
Speedometer, fuel gauge, and temperature gauge.
Usually the gauge in on the dashboard with all the other gauges. That way you can read it while driving.
check battery cables at battery may be lose.
probably the fuel pump
A pretty reasonable assumption would be the thermostat is stuck open.
Need to know year and engine size, That will help us answer your question. it's a 7.4 454 engine in a 1996 GMC suburban
Yes 4 high ONLY .
A 2000 Chevy Venture might skip while driving because of water in the fuel or damaged or dirty fuel injectors. You might also have an issue with the distributor.
It depends on the setpoint of the thermostat.