Exhaust Manifold Installation-Left (Medium Duty)

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.

Install the exhaust manifold studs into the cylinder head, if necessary.
Tighten

Tighten the exhaust manifold studs to 20 N.m (15 lb ft).

Fig 1: Left Exhaust Manifold Studs (Medium Duty)
Courtesy of GENERAL MOTORS CORP.
Install the NEW left exhaust manifold gasket.
Install the left exhaust manifold.
Install the left exhaust manifold nuts and center bolt.
Tighten
- Tighten the left exhaust manifold center bolt to 35 N.m (26 lb ft).
- Tighten the left exhaust manifold nuts to 16 N.m (12 lb ft).
Fig 2: Left Exhaust Manifold, Gasket, Bolts & Nuts (Medium Duty)
Courtesy of GENERAL MOTORS CORP.
Install the left exhaust manifold heat shield.
Install the left exhaust manifold heat shield nuts.
Tighten

Tighten the left exhaust manifold heat shield nuts to 25 N.m (19 lb ft).

Fig 3: Left Exhaust Manifold Heat Shield & Nuts (Medium Duty)
Courtesy of GENERAL MOTORS CORP.
Install the left spark plugs.
Tighten

Tighten the left spark plugs to 20 N.m (15 lb ft).

Fig 4: Left Spark Plug
Courtesy of GENERAL MOTORS CORP.

Important: Fully install the spark plug wire by pushing on the exposed end of the spark plug boot. Do not push the spark plug wire onto the spark plug by using the metal heat shield.
Install the left spark plug wires to the spark plugs and ignition coils.

Fig 5: Left Spark Plug Wire
Courtesy of GENERAL MOTORS CORP.