Installation 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 Tail Pipe Hanger Insulator

Courtesy of GENERAL MOTORS CORP.

Lubricate the 5 insulators where the muffler assembly hangers are inserted in order to ease installation.
With the aid of an assistant, position and install the muffler assembly.
Install the insulator (1) to the rear tail pipe hanger.

Fig 2: View Of Muffler Assembly Insulators

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Install the insulators (1-3) to the front, intermediate, and rear muffler assembly hangers.

Fig 3: View Of Catalytic Converter To Muffler Nuts

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CAUTION: Refer to Fastener Caution .

Install the catalytic converter to muffler nuts and tighten to 45 N.m (33 lb ft).

Fig 4: Identifying Rear Shock Absorbers Lower Bolts & Nuts

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Raise the rear axle using the adjustable jack stands, if necessary.
Install the rear shock absorber lower bolts and nuts, if necessary and tighten to 95 N.m (70 lb ft).

Fig 5: View Of Rear Axle Vent Hose (10.5 Inch Ring Gear)

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If equipped with a 10.5 inch ring gear, install the rear axle vent hose to the rear axle, if necessary.
Connect the vent hose swivel clip to the rear brake crossover pipe, if necessary.

Fig 6: View Of Rear Axle Vent Hose (8.6 or 9.5 Inch Ring Gear)

Courtesy of GENERAL MOTORS CORP.

If equipped with a 8.6 or a 9.5 inch ring gear, install the rear axle vent hose to the rear axle, if necessary.
Install the vent hose swivel clip to the rear brake crossover pipe, if necessary.
Remove the adjustable jack stands from under the rear axle, if necessary.
Install the spare tire, if necessary.
Lower the vehicle.