Avalanche 1500 4WD V8-5.3L (2007)
19. With the aid of an assistant, remove the insulator from the exhaust system hanger near the resonator.
Important: During removal, do not over extend the flex coupler as internal damage may occur.
20. Remove the muffler assembly.
Installation Procedure
1. Lubricate the insulators where the muffler assembly hangers are inserted for ease of installation.
Notice: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical
movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.
2. With the aid of an assistant, install the muffler assembly.
3. With the aid of an assistant, install the insulators to the exhaust system hangers (2 and 3).
