Installation Procedure

WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exhaust System

Courtesy of GENERAL MOTORS CORP.

While the exhaust system is on the floor complete the following:
1. Apply a soapy solution to the following in order to ease the installation of the hangers:
  - The inner diameter of the front exhaust hangers
  - The exhaust pipe hanger rods
  - The inner diameter of the tail pipe hangers
  - The tail pipe hanger rods
2. Press the front exhaust hangers over the exhaust pipe hanger rods.
Place NEW seals on the exhaust manifold flanges.

CAUTION: Refer to Exhaust System Inspection Caution .

With the aid of an assistant, raise the exhaust system into position, aligning the exhaust pipe flanges with the studs located in the rear of the exhaust manifolds.
Finger tighten the nuts to the exhaust manifold studs.

Fig 2: Tail Pipe Hangers

Courtesy of GENERAL MOTORS CORP.

Press the tail pipe hangers (1) over the tail pipe hanger rods.

Fig 3: Front Exhaust Hangers

Courtesy of GENERAL MOTORS CORP.

Press the front exhaust hangers (1) over the rear suspension hanger rods.

Fig 4: Exhaust Pipe-To-Exhaust Manifold Nuts

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Fastener Caution .

Tighten the exhaust pipes to exhaust manifold nuts to 17 N.m (13 lb ft).

Fig 5: Floor Panel Tunnel Brace

Courtesy of GENERAL MOTORS CORP.

Position the floor panel tunnel brace to the floor panel.
Install the 2 bolts securing the floor panel tunnel brace to the floor panel and tighten to 25 N.m (18 lb ft).
Install the heated oxygen sensors to the exhaust pipes. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 and Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 .
Lower the vehicle.