Exhaust Manifold Installation (LCV)

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exhaust Manifold, Bolts And Gasket

Courtesy of GENERAL MOTORS COMPANY

Install a NEW exhaust manifold gasket (1).
Install the exhaust manifold (2) to the cylinder head.
Hand start NEW exhaust manifold to cylinder head retaining bolts (3).

Fig 2: Exhaust Manifold Bolt Tightening Sequence

Courtesy of GENERAL MOTORS COMPANY

CAUTION:

Refer to Fastener Caution .

NOTE:

Fasteners have adhesive patch and must be tightened to final torque within 5 minutes.

Tighten the NEW exhaust manifold to cylinder head bolts three passes in sequence to 20 N.m (15 lb ft).

Fig 3: Exhaust Manifold Heat Shield And Bolts

Courtesy of GENERAL MOTORS COMPANY

Install the exhaust manifold heat shield (1).
Install the exhaust manifold heat shield bolts (2) and tighten to 14 N.m (124 lb in).

Fig 4: Oxygen Sensor

Courtesy of GENERAL MOTORS COMPANY

Coat the threads of the oxygen sensor (1) with anti-seize. Refer to Adhesives, Fluids, Lubricants, and Sealers (LCV) .
Install the oxygen sensor and tighten to 42 N.m (31 lb ft).