Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Install the exhaust manifold gasket to the cylinder head.
NOTE: Refer to Fastener Notice in Cautions and Notices.

Fig 1: Exhaust Manifold Bolt/Washer Installed Position (6.6L (LB7) Engine)
Courtesy of GENERAL MOTORS CORP.
Install the bolt for the oil level indicator tube bracket.
Tighten: Tighten the bolt to 21 N.m (15 lb ft).
Install the exhaust manifold.
Install the exhaust manifold bolts/nuts.
Using the sequence shown, properly tighten the exhaust manifold bolts.
Tighten:
1. Tighten the bolt/nuts a first pass to 34 N.m (25 lb ft).
2. Tighten the bolts/nuts a final pass to 34 N.m (25 lb ft).
Fig 2: Exhaust Manifold Bolt Tighten Sequence (6.6L (LB7) Engine)
Courtesy of GENERAL MOTORS CORP.

Fig 3: Exhaust Manifold Heat Shield (6.6L (LB7) Engine)

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold heat shield.
Install the exhaust manifold heat shield bolts.
Tighten: Tighten the bolts to 8 N.m (71 lb in).

Fig 4: View Of Right Exhaust Pipe To Exhaust Manifold & Turbocharger Bolts (6.6L (LB7) Engine)

Courtesy of GENERAL MOTORS CORP.

Install the exhaust pipe gasket. Align the tab on the gasket to face outward.
Install the exhaust pipe bolts (1).
Tighten: Tighten the bolts to 53 N.m (39 lb ft).
Install the wheelhouse panel. Refer to Wheelhouse Panel Replacement in Body Front End.
Install the front tire and wheel, if necessary. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
Lower the vehicle.