GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2003
🢒
GMC C Sierra - 2WD
🢒
Engine
🢒
Engine Controls - 6.6L
🢒 Fuel Tank Draining
Disconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine Electrical.
Remove the fuel fill cap.
Using a hand or air operated pump drain as much fuel through the fuel fill pipe as possible.