Sierra 3500 Denali 2WD V8-6.0L (2011)
3. Install NEW fuel injector lower O-ring seals onto the injectors.
4. Lubricate the NEW O-ring seals with clean engine oil.
Note: Push down firmly on both sides of the rail until all the injectors have been seated into their bores.
5. Install the fuel rail.
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
6. Install the fuel rail bolts and tighten to 10 Nm (89 lb in).
7. Install a NEW throttle body gasket to the intake manifold.
8. Install the throttle body.
9. Install the throttle body bolts/nuts and tighten to 10 Nm (89 lb in).