Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Atalytic Converter-To-Exhaust Manifold Nuts

Courtesy of GENERAL MOTORS CORP.

Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
Remove the catalytic converter to exhaust manifold nuts (1).
Lower the vehicle.

Fig 2: View Of Exhaust Manifold Heat Shield & Bolts

Courtesy of GENERAL MOTORS CORP.

Remove the exhaust manifold heat shield bolts and shield.
Remove the spark plugs. Refer to Spark Plug Replacement .
Reposition the spark plug wires out of the way, if necessary.

Fig 3: View Of Exhaust Manifold Bolts & Stud

Courtesy of GENERAL MOTORS CORP.

Remove the exhaust manifold bolts and stud.
Remove the exhaust manifold and gaskets (1). Discard the gaskets.
Remove the exhaust manifold to catalytic converter seal (2). Discard the seal.