GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 GMC K Sierra - 4WD 🢒 Engine 🢒 Engine Controls - 6.6L 🢒 Fuel Feed Pipe and Return Pipe Purging
  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).