Installation Procedure

CAUTION: Refer to Protective Goggles and Glove Caution .

IMPORTANT: If reinstalling the original intermediate pipe, the tail pipe/muffler band clips must be replaced. Mark the position of the band clips on the intermediate exhaust pipe. Remove the band clips by grinding the welds. Install new band clips on the intermediate pipe. Position the new band clips using the alignment mark created previously.

Using a wire brush, clean the contact area of the left and right mufflers to the intermediate pipe.
Apply a small amount of lubricant on the intermediate pipes and the left and right mufflers

Fig 1: View Of Intermediate Exhaust Pipe, Exhaust Manifold Nuts & Exhaust Seal

Courtesy of GENERAL MOTORS CORP.

Position the intermediate pipe on the jack stands.
Raise the intermediate pipe and install the intermediate pipe.
Install the exhaust seal (3).

Fig 2: Installing The Intermediate Pipe (3) To The Left (1) And Right (2) Mufflers

Courtesy of GENERAL MOTORS CORP.

Install the intermediate pipe (3) to the left (1) and right (2) mufflers.
IMPORTANT: When install the retaining nuts, hand tighten them. This will allow the proper alignment of the exhaust system for the final assembly procedure.
Install the retaining nuts (2).
Remove the adjustable jack stands.

Fig 3: View Of Exhaust Muffler Band Clamps
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.
Tighten the exhaust muffler clamps (2) and (5).
Tighten: Tighten the exhaust clamps bolts to 44 N.m (32 lb ft).

Fig 4: View Of Intermediate Exhaust Pipe, Exhaust Manifold Nuts & Exhaust Seal
Courtesy of GENERAL MOTORS CORP.
Tighten the exhaust manifold nuts (2).
Tighten: Tighten the exhaust manifold nuts to 20 N.m (15 lb ft).

Fig 5: View Of Intermediate Exhaust Pipe Hanger
Courtesy of GENERAL MOTORS CORP.
Tighten the exhaust pipe hanger lower bolts (3).
Tighten: Tighten the exhaust pipe hanger bolts to 50 N.m (37 lb ft).
Lower the vehicle.