Chevrolet Silverado / GMC Sierra. Service manual — part 1806

3. Position a NEW exhaust pipe gasket between the exhaust manifold and exhaust pipe. Align

the tabs on the gasket to face downward.

4. Install the exhaust manifold onto the studs.

Fig. 52: Exhaust Manifold Bolt Tightening Sequence -- Right Side
Courtesy of GENERAL MOTORS CORP.

5. Install and tighten the exhaust manifold bolts and nuts in the sequence shown.

Tighten:

Tighten the bolts/nuts to 57 N.m (42 lb ft).

Tighten the 4 center bolts/nuts an additional pass to 57 N.m (42 lb ft).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 53: View Of Exhaust Manifold Heat Shield & Bolts
Courtesy of GENERAL MOTORS CORP.

6. Position the exhaust manifold heat shield to the manifold and install the exhaust manifold

bolts (1).

Tighten: Tighten the bolts to 10 N.m (89 lb in).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 54: View Of Exhaust Pipe Bracket Bolts
Courtesy of GENERAL MOTORS CORP.

7. Install the exhaust pipe bracket and the exhaust pipe to exhaust manifold bolts (1).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 55: View Of Exhaust Manifold Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

8. Tighten the exhaust pipe to exhaust manifold bolts in the sequence shown (4, 5, and 6).

Tighten: Tighten the bolts to 53 N.m (39 lb ft).

9. Install the wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right

Side (GMC) or Front Wheelhouse Liner Replacement - Right Side (Chevrolet) .

10. Install the turbocharger exhaust pipe. Refer to Turbocharger Exhaust Pipe Replacement

(6.6L).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado