Exhaust Manifold Installation

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 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 .

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

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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: View Of Oxygen Sensor

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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 42 N.m (31 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).