Silverado Classic 2500 2WD V8-8.1L (2007)
10. Install the fuel tank filler housing.
11. Install the fuel tank filler housing to fuel tank fill pipe screws.
Tighten the screws to 2.3 N.m (20 lb in).
12. Install the fuel tank filler housing to body screws (1) and retainer (2).
Tighten the screws to 2.3 N.m (20 lb in).