Chevrolet Silverado / GMC Sierra. Manual — part 1945
46. Remove the fuel rail.
47. Remove and discard the fuel injector lower O-ring seals.
Fig. 157: View Of Brake Booster Vacuum Hose Nipple
Courtesy of GENERAL MOTORS CORP.
48. Remove the brake booster vacuum hose nipple.
Installation Procedure
removed from their bores.
IMPORTANT: Evenly push in the RED collar in order to remove the nipple.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 158: View Of Brake Booster Vacuum Hose Nipple
Courtesy of GENERAL MOTORS CORP.
1. If the intake manifold was replaced perform the following steps, otherwise proceed to step
21.
2. Install the brake booster vacuum hose nipple to the NEW intake manifold.
IMPORTANT: Evenly push in the RED collar in order to install the nipple.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 159: View Of Fuel Rail & Bolts
Courtesy of GENERAL MOTORS CORP.
3. Install NEW fuel injector lower O-ring seals onto the injectors.
4. Lubricate the NEW O-ring seals with clean engine oil.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
5. Install the fuel rail.
6. Install the fuel rail bolts.
Tighten: Tighten the bolts to 10 N.m (89 lb in).
Fig. 160: View Of Throttle Body, Gasket & Bolts/Nuts
Courtesy of GENERAL MOTORS CORP.
7. Install a NEW throttle body gasket to the intake manifold.
8. Install the throttle body.
9. Install the throttle body bolts/nuts.
Tighten: Tighten the bolts/nuts to 10 N.m (89 lb in).
IMPORTANT: Push down firmly on both sides of the rail until all the
injectors have been seated into their bores.
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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