Installation Procedure

Courtesy of GENERAL MOTORS COMPANY

Trailer Hitch Platform (1) - Install
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CAUTION:
Fastener Caution

Trailer Hitch Platform Bolt (1) - Install and tighten [4x] - Fastener Specifications
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Trailer Hitch Platform Nut (1) - Install and tighten [2x] - Fastener Specifications
Connect the electrical connectors.
Install the wiring harness.
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Rear Bumper Fascia (1) - Install - Rear Bumper Fascia Removal and Installation
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With the aid of an assistant, install the exhaust muffler (1) to the vehicle and support the exhaust system.
Install the exhaust intermediate muffler insulator to the exhaust muffler.
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Exhaust System Intermediate Gasket (3) - Install NEW
Exhaust Muffler (2) - Connect
Exhaust Muffler Flange Nut (1) - Install and tighten [2x] - Fastener Specifications
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Exhaust Rear Muffler Rear Hanger - Left Side and Right Side (2) - Install [2x]
Exhaust Rear Muffler Rear Hanger Bolt - Left Side and Right Side (1) - Install and tighten [4x] - Fastener Specifications
Remove the support from the exhaust system.
Remove the support and lower the vehicle.
Inspect the exhaust system for leaks.