Exhaust Manifold Installation

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Exhaust Manifold Studs

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install NEW exhaust manifold studs, if necessary.
Tighten: Tighten the studs to 10 N.m (89 lb in).

Fig 2: View Of Exhaust Manifold And Catalytic Converter Assembly

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold gasket.
Install the exhaust manifold and catalytic converter assembly to the cylinder head.
Install NEW exhaust manifold to cylinder head retaining nuts finger tight.

Fig 3: Exhaust Manifold Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

Tighten the NEW exhaust manifold cylinder head retaining nuts in sequence.
Tighten: Tighten the nuts a second time to 14 N.m (124 lb in).

Fig 4: Identifying Oxygen Sensor

Courtesy of GENERAL MOTORS CORP.

Coat the threads of the oxygen sensor with anti-seize compound GM P/N 12397953.
Install the oxygen sensor.
Tighten: Tighten the oxygen sensor to 30 N.m (22 lb ft).

Fig 5: View Of Block Heater

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Install the block heater and bolt, if equipped.
Tighten: Tighten the bolt to 10 N.m (89 lb in).

Fig 6: View Of Exhaust Manifold Heat Shield

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold heat shield.
Install the exhaust manifold heat shield bolts.
Tighten: Tighten the bolts to 23 N.m (17 lb ft).