Sierra 1500 4WD V8-6.0L (2007)
5. Pull the fuel line connection apart.
Notice: If necessary, remove rust or burrs from the fuel pipes with an emery cloth. Use a radial motion with the fuel pipe end in order to prevent
damage to the O-ring sealing surface. Use a clean shop towel in order to wipe off the male tube ends. Inspect all the connections for dirt and burrs.
Clean or replace the components and assemblies as required.
6. Use a clean shop towel in order to wipe off the male connection end.
7. Inspect both ends of the fitting for dirt and burrs. Clean or replace the components as required.
Connect Procedure
Caution: In order to reduce the risk of fire and personal injury, before connecting fuel pipe fittings, always apply a few drops of clean engine
oil to the male pipe ends.
This will ensure proper reconnection and prevent a possible fuel leak.
During normal operation, the O-rings located in the female connector will swell and may prevent proper reconnection if not lubricated.
1. Apply a few drops of clean engine oil to the male connection end.
2. Push both sides of the fitting together in order to engage the retaining tabs.
3. Once installed, pull on both sides of the connection in order to ensure the connection is secure.
