NOTE: After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.

Turn ignition on. Using scan tool, record and erase Body Control Module (BCM) DTCs. Turn ignition off and back on. Wait 15 seconds. Recheck for DTCs. If FUEL LEVEL SENDING UNIT INPUT SHORT resets, go to next step. If FUEL LEVEL SENDING UNIT INPUT SHORT does not reset, conditions necessary to set this DTC are not present at this time. Check for intermittent poor connections or faulty circuits and repair as necessary. Check for any related Technical Service Bulletins (TSBs).
Turn ignition on. Using scan tool, select BODY CONTROL MODULE then SENSORS. Monitor FUEL SENSOR. Access and disconnect fuel tank module connector. See FUEL TANK MODULE under REMOVAL & INSTALLATION. If voltage is 9.5 volts or less, go to next step. If voltage is greater than 9.5 volts, replace fuel tank module fuel level sending unit.
Turn ignition on. Using DVOM, measure resistance between ground and fuel tank module connector terminal No. 3 (Dark Blue/White wire). If resistance is greater than 5 ohms, replace BCM. See BODY CONTROL MODULE under REMOVAL & INSTALLATION. If resistance is 5 ohms or less, repair short to ground in Dark Blue/White wire between fuel tank module and BCM connector C3 terminal No. 20. See Figure.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Fuel Level Sending Unit Input Short