Sierra 1500 4WD V8-6.0L (2007)
Notice: During removal or installation, do not over extend the flex couple as internal damage may occur.
11. Remove the insulators (1) from the intermediate muffler assembly hangers and remove the muffler assembly. Pull the muffler assembly rearward
until the flange is able to clear the front frame crossmember, and remove the muffler toward the front of the vehicle.
Installation Procedure
1. If equipped with a 4.8L engine, perform the following steps, otherwise proceed to step 6.
2. Lubricate the 3 insulators where the muffler assembly hangers are inserted in order to ease installation.
Notice: During removal or installation, do not over extend the flex couple as internal damage may occur.
3. With the aid of an assistant, position and install the muffler assembly.
4. Install the insulators (1, 2) to the front and rear muffler assembly hangers.
