Sierra 1500 2WD V8-5.3L VIN Z Flex Fuel (2006)
11. Install the fuel tank filler housing.
12. Install the fuel tank filler housing to fuel tank fill pipe bolts.
Tighten the screws to 2.3 N.m (20 lb in).
13. Install the fuel tank filler housing to body TORX(r) screws (1) and pushpin retainer (2).
Tighten the screws to 2.3 N.m (20 lb in).