Exhaust Manifold Installation

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Exhaust Manifold Gasket

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold gasket.

Fig 2: View Of Exhaust Manifold & Bolts

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold.
Add threadlock GM P/N United States 12345493, GM P/N Canada 10953488 to the exhaust manifold bolt threads.
Install the exhaust manifold bolts.

Fig 3: Exhaust Manifold Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Tighten the exhaust manifold bolts.
Tighten:
1. Tighten the exhaust manifold bolts a first pass in sequence to 25 N.m (18 lb. ft.).
2. Tighten the exhaust manifold bolts a second pass in sequence to 25 N.m (18 lb. ft.).
3. Tighten the exhaust manifold bolts a final pass in sequence to 25 N.m (18 lb. ft.).

Fig 4: View Of Exhaust Manifold Studs

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold heat shield studs (if required).
Tighten: Tighten the exhaust manifold heat shield studs to 10 N.m (89 lb in).

Fig 5: View Of Exhaust Manifold Heat Shield & Nuts

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold heat shield.
Add anti-seize GM P/N United States 12371386, GM P/N Canada 993128 to the exhaust manifold heat shield nuts.
Install the exhaust manifold heat shield nuts.
Tighten: Tighten the exhaust manifold heat shield nuts to 10 N.m (89 lb in).