Chevrolet Silverado / GMC Sierra. Service manual — part 618

2008 ENGINE

Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

OFF-VEHICLE REPAIR INSTRUCTIONS (CONT.)

INTAKE MANIFOLD CROSSOVER INSTALLATION

Fig. 1: View Of Center Intake Manifold
Courtesy of GENERAL MOTORS CORP.

1. Install the intake manifold crossover gaskets.

2. Install the intake manifold crossover.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

3. Install the intake manifold crossover nuts and bolts in sequence.

Tighten: Tighten the intake manifold crossover nuts and bolts to 10 N.m (89 lb in).

VALVE ROCKER ARM COVER INSTALLATION - LOWER LEFT SIDE

Fig. 2: View Of Lower Valve Rocker Arm Cover (Left)
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The gasket may be reused if it is not torn, cracked, stretched,

or swollen.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

1. Install the lower valve rocker arm cover.

Fig. 3: Lower Valve Rocker Arm Cover Bolts Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

2. Install the lower valve rocker arm cover bolts.

Tighten:

Tighten the lower valve rocker arm cover bolts in the proper sequence to 10 N.m (89
lb in).

Retighten the lower valve rocker arm cover bolts in the proper sequence to the same
torque, 10 N.m (89 lb in).

VALVE ROCKER ARM COVER INSTALLATION - LOWER RIGHT SIDE

NOTE:

Refer to Fastener Notice

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 4: View Of Lower Valve Rocker Arm Cover (Right)
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The gasket may be reused if it is not torn, cracked, stretched,

or swollen.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado