Exhaust Manifold Installation - Left

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.

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: View Of Exhaust Manifold Studs (Left)

GM470683

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: View Of Left Exhaust Manifold, Gasket, Bolts And Nuts

GM470679

Courtesy of GENERAL MOTORS CORP.

Install the left exhaust manifold heat shield.
Install the left exhaust manifold heat shield bolts and nuts.
Tighten: Tighten the left exhaust manifold heat shield bolts and nuts to 25 N.m (18 lb ft).

Fig 3: View Of Exhaust Manifold Heat Shield Bolts & Nuts (Left)

GM1309938

Courtesy of GENERAL MOTORS CORP.

Install the spark plugs.
Tighten: Tighten the spark plugs to 30 N.m (22 lb ft).

Fig 4: View Of Spark Plugs

GM1309939

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 on to the spark plug by using the metal heat shield.

Install the spark plug wires to the spark plugs and ignition coils.

Fig 5: View Of Spark Plug Wires

GM1309937

Courtesy of GENERAL MOTORS CORP.