Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Important: To assist in installing the exhaust manifold to the engine, the tabs at the bolt holes on a NEW exhaust manifold gasket will hold the bolts and the gaskets in place.

Sub-assemble the bolts, spark plug wire shields, and NEW gaskets to the exhaust manifold.
Ensure that the exhaust manifold bolts are held in place by the tabs on the exhaust manifold gaskets.

Fig 1: Identifying New Exhaust Manifold Gasket
Courtesy of GENERAL MOTORS CORP.
Install the exhaust manifold.
Install the spark plug wire shields.
If reusing the fasteners, apply threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the threads of the exhaust manifold bolts.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the exhaust manifold bolts.
Tighten
1. 6.1. Tighten the exhaust manifold bolts on the first pass to 15 N.m (11 lb ft).
2. 6.2. Tighten the exhaust manifold bolts on the final pass to 30 N.m (22 lb ft).
Install the spark plug wires to the spark plug wire retainers.
Install the spark plug wires onto the spark plugs.

Fig 2: Installing Bolt For Oil Level Indicator Tube
Courtesy of GENERAL MOTORS CORP.
Raise the vehicle. Refer to JACKING AND LIFTING in General Information.
Connect the exhaust pipe to the exhaust manifold. Refer to Exhaust Manifold Pipe Replacement .
Lower the vehicle.
Install the bolt for the oil level indicator tube.
Tighten

Tighten the oil level indicator tube bolt to 12 N.m (106 lb in).