Installation Procedure

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: When inspecting or replacing exhaust system components, make sure there is adequate clearance from all points on the underbody to prevent overheating of the floor pan and possible damage to the passenger compartment insulation and trim materials.

Fig 1: View Of Rear Exhaust Manifold Pipe & Attachments

Courtesy of GENERAL MOTORS CORP.

Install the following components to the rear exhaust manifold pipe.
1. Position a NEW rear exhaust manifold pipe seal and the rear exhaust manifold pipe flange to the rear exhaust manifold pipe.
2. Insert and snug the 2 rear exhaust manifold pipe to flange bolts.
3. Insert the 2 rear exhaust manifold pipe to exhaust manifold bolts.
4. Place a NEW rear exhaust manifold pipe to exhaust manifold gasket onto the bolts.
Install and position the rear exhaust manifold pipe to the front exhaust manifold pipe and exhaust manifold.

CAUTION: Refer to Fastener Caution .

Tighten the rear exhaust manifold pipe to exhaust manifold bolts.
Tighten: Tighten the bolts to 40 N.m (30 lb ft).
Tighten the rear exhaust manifold pipe to front exhaust manifold pipe bolts.
Tighten: Tighten the bolts to 25 N.m (18 lb ft).

Fig 2: Removing/Installing Catalytic Converter

Courtesy of GENERAL MOTORS CORP.

Place a NEW catalytic converter gasket over the catalytic converter studs.

CAUTION: Do not over-flex or damage the flex joint when moving the flex joint from the normal mounting position.

Position the catalytic converter to the rear exhaust manifold pipe.
Install the catalytic converter to the rear exhaust manifold pipe.
Tighten: Tighten the nuts to 25 N.m (18 lb ft).
Lower the vehicle.