Silverado 3500 2WD V8-6.6L DSL Turbo VIN 2 (2004)
Fuel Return Line: Service and Repair
Fuel Feed and Fuel Return Pipe Purge Procedure
FUEL FEED AND FUEL RETURN PIPE PURGE PROCEDURE
1. Pump the primer located on top of the fuel filter 30 times or until stiff.
2. Attempt to start and run the engine. If the engine does not start, repeat step 1.
3. Allow to run for 5 minutes at idle.
4. Check for fuel leaks.
5. Clear all engine diagnostic trouble codes (DTCs).
Fuel Return Pipe Replacement
FUEL RETURN PIPE REPLACEMENT
REMOVAL PROCEDURE
1. Remove the engine wiring harness.
2. Remove the water outlet.
3. Remove the exhaust gas recirculation (EGR) cooler tube.
4. Reposition the fuel return line hose clamps (1).
5. Remove the fuel return line hoses from the return line.
