C 3500 Truck 2WD V8-454 7.4L (1990)
Fuel Gauge: Testing and Inspection
Gauge Stays at Full or Beyond
This condition is generally caused by a open circuit between the gauge and sending unit.
1.
Disconnect sender lead at fuel tank, then ground lead.
2.
If fuel gauge reads at empty position, replace tank sending unit.
3.
If gauge read at full or beyond, repair open between gauge and fuel tank.
