Installation Procedure

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exhaust Manifold

Courtesy of GENERAL MOTORS CORP.

Install a NEW exhaust manifold gasket onto the studs.
Install the exhaust manifold to the engine.

Fig 2: Exhaust Manifold Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Fastener Caution .

Install NEW exhaust manifold nuts and tighten to 14 N.m (10 lb ft).
Raise and support the vehicle.
Install the catalytic converter assembly. Refer to Catalytic Converter Replacement (LAP) .
Lower the vehicle.
Install the heated oxygen sensor HO2S. Refer to Heated Oxygen Sensor Replacement - Sensor 1 .
If equipped with RPO NU3, install the AIR check valve. Refer to Secondary Air Injection Check Valve Pipe Replacement .
Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
Inspect the exhaust system for leaks.