Installation Procedure

With the aid of an assistant, slide the muffler forward in order to install the muffler to the catalytic converter.
Install the exhaust muffler hanger brackets to the exhaust hanger insulators.

Fig 1: Installing Exhaust Muffler Hanger Brackets
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE .
If equipped with a 6.5L engine, Install a NEW U-bolt clamp.
Tighten

Tighten the U-bolt clamp to 42 N.m (31 lb ft).

Fig 2: Installing U-Bolt Clamp
Courtesy of GENERAL MOTORS CORP.
If equipped with a 8.1L engine, install the exhaust muffler nuts.
Tighten

Tighten the exhaust muffler nuts to 64 N.m (47 lb ft).
Lower the vehicle.

Fig 3: Installing Exhaust Muffler Nuts
Courtesy of GENERAL MOTORS CORP.