Avalanche 1500 2WD V8-5.3L (2008)
Installation Procedure
1. Lubricate the insulators where the muffler assembly hangers are inserted in order to ease installation.
2. With the aid of an assistant, install the muffler assembly. Rotate the muffler into position over the rear axle, move the muffler rearward, then
forward installing the muffler to the catalytic converters.
3. Install the insulators to the exhaust system hangers (4, 5, and 6).
Notice: Refer to Fastener Notice .
4. Tighten the exhaust pipe clamp at the left catalytic converter.
Tighten the clamp to 44 N.m (32 lb ft).
5. Install the exhaust muffler to right catalytic converter nuts.
Tighten the nuts to 45 N.m (33 lb ft).
