Chevrolet Silverado / GMC Sierra. Service manual — part 613

Fig. 126: Exhaust Manifold Bolt Tightening Sequence -- Left Side (6.6L)
Courtesy of GENERAL MOTORS CORP.

3. Install the exhaust manifold bolts and nuts.

Tighten: Tighten the exhaust manifold bolts and nuts to 57 N.m (42 lb ft) in the proper
sequence.

Tighten: Tighten the center exhaust manifold bolts and nuts an additional pass to 57 N.m
(42 lb ft) in sequence.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Fig. 127: View Of Exhaust Manifold Heat Shield (Left)
Courtesy of GENERAL MOTORS CORP.

4. Install the exhaust manifold heat shield.

5. Install the exhaust manifold heat shield bolts.

2008 Chevrolet Silverado 1500

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

Tighten: Tighten the exhaust manifold heat shield bolts to 10 N.m (89 lb in).

EXHAUST MANIFOLD INSTALLATION - RIGHT SIDE

Fig. 128: View Of Right Exhaust Manifold & Gasket
Courtesy of GENERAL MOTORS CORP.

1. Install the exhaust manifold gasket.

2. Install the exhaust manifold.

2008 Chevrolet Silverado 1500

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

Fig. 129: Exhaust Manifold Bolt Tightening Sequence -- Right Side (6.6L)
Courtesy of GENERAL MOTORS CORP.

3. Install the exhaust manifold bolts and nuts.

Tighten: Tighten the exhaust manifold bolts and nuts to 57 N.m (42 lb ft) in the proper
sequence.

Tighten: Tighten the center exhaust manifold bolts and nuts an additional pass to 57 N.m
(42 lb ft) in sequence.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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