Chevrolet Silverado / GMC Sierra. Service manual — part 2206

Lubricants .

Fig. 77: Identifying Intake Manifold Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

4. Install the intake manifold bolts.

Tighten:

1. Tighten the intake manifold bolts (1-10) a first pass in sequence to 5 N.m (44 lb in).

2. Tighten the intake manifold bolts (1-10) a final pass in sequence to 10 N.m (89 lb in).

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

Fig. 78: MAP Sensor
Courtesy of GENERAL MOTORS CORP.

5. Install the fuel rail. Refer to Fuel Rail and Injectors Installation.

6. Lubricate the manifold absolute pressure (MAP) sensor grommet (715) with clean engine

oil.

7. Install the grommet onto the MAP sensor (714).

8. Install the MAP sensor and retainer (736).

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. 79: View Of PCV Dirty-Air Hose
Courtesy of GENERAL MOTORS CORP.

9. Install the positive crankcase ventilation (PCV) hose - dirty air (716).

FUEL RAIL AND INJECTORS INSTALLATION

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. 80: Fuel Rail & Injectors
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the NEW fuel injector O-ring seals (532, 534) with clean engine oil.

2. Install the O-ring seals to the fuel injectors.

3. Install the fuel injectors (533) and retainers (521).

CAUTION: Refer to Fuel Rail Stop Bracket Installation Caution .

IMPORTANT: DO NOT use the fuel injector O-ring seals again. Install NEW

fuel injector O-ring seals during assembly.

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