Sierra 3500 Denali 2WD V8-6.0L (2011)
10. Remove the seals (308) from the coolant air bleed pipe and/or covers.
11. Discard the seals.
Installation Procedure
Note: Position the O-ring seal (308) onto the nipple portion of the pipe.
1. Install the seals onto the coolant air bleed pipe and/or covers.