Exhaust Manifold Removal - Right Side (W/O RPO NC1 or NF7)

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View of Oxygen Sensor

Courtesy of GENERAL MOTORS COMPANY

Remove the oxygen sensor (1) and inspect the sensor for excessive deposits or damage. Replace the oxygen sensor if necessary.

Fig 2: Identifying Right Exhaust Manifold Retaining Nuts

Courtesy of GENERAL MOTORS COMPANY

CAUTION:

The stud must be reinstalled in the original location. The stud may remain attached to the nut when initially removed during exhaust manifold removal. In order to prevent exhaust leakage between the exhaust manifold and cylinder head the nut and stud combination must be reinstalled during exhaust manifold installation in the original location.

Remove the right exhaust manifold retaining nuts (3).

NOTE:

DO NOT reuse the exhaust manifold gasket.

Remove the exhaust manifold and the gasket (1).

Fig 3: Identifying Right Coolant Heater

Courtesy of GENERAL MOTORS COMPANY

If equipped, remove the right coolant heater (1) as follows:
1. Remove the coolant heater retaining bolt.
2. Remove coolant heater from the cylinder block.