Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
16. Install the oil level indicator tube bolt (1).
Tighten the bolt to 21 N.m (15 lb ft).
17. Install the wiring harness retainer to the bracket.
18. Install the charged air cooler outlet duct.
19. Install the air cleaner outlet duct.
20. Install the intake manifold cover.