Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 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.
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.

Fig 1: Installing Exhaust Manifold, Gasket, Bolts & Nuts - Right (6.6L)
Courtesy of GENERAL MOTORS CORP.
Use the sequence shown, properly tighten the exhaust manifold bolts.
Tighten
1. 5.1. Tighten the bolt/nuts a first pass to 34 N.m (25 lb ft).
2. 5.2. Tighten the bolts/nuts a final pass to 34 N.m (25 lb ft).
Fig 2: Right Exhaust Manifold Bolts Tightening Sequence (6.6L)
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 3: Exhaust Manifold Heat Shield & Bolts - Right (6.6L)
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).

Fig 4: Installing Exhaust Pipe Bolts - Right
Courtesy of GENERAL MOTORS CORP.
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.