Chevrolet Silverado / GMC Sierra. Service manual — part 617

Fig. 142: Intake Manifold Bolt Tightening Sequence (Left)
Courtesy of GENERAL MOTORS CORP.

3. Install the intake manifold bolts and nuts.

Tighten: Tighten the intake manifold bolts and nuts to 25 N.m (18 lb ft).

INTAKE MANIFOLD INSTALLATION - 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. 143: Determining Sealant Bead Dimensions
Courtesy of GENERAL MOTORS CORP.

1. Apply a 2-3 mm wide by 0.5-1.5 mm high bead of GM P/N 12378521 (Canadian P/N

88901148) sealant on the intake manifold mating surface.

2008 Chevrolet Silverado 1500

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

Fig. 144: View Of Intake Manifold (Right)
Courtesy of GENERAL MOTORS CORP.

2. Install the intake manifold.

2008 Chevrolet Silverado 1500

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

Fig. 145: Intake Manifold Bolt Tightening Sequence (Right)
Courtesy of GENERAL MOTORS CORP.

3. Install the intake manifold bolts and nuts.

Tighten: Tighten the intake manifold bolts and nuts to 25 N.m (18 lb ft).

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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