Sierra 1500 4WD V8-6.0L (2007)
Exhaust Pipe/Muffler Hanger: Service and Repair
Exhaust Hanger Mounting Bracket Replacement (6.0L, 6.6L)
Removal Procedure
1. If equipped with a 6.0L engine, remove the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement (6.0L - Cab/Chassis).
2. If equipped with a 6.0L engine, remove the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side (6.0L - Cab/Chassis).
3. If equipped with a 6.6L engine, remove the catalytic converter. Refer to Catalytic Converter Replacement (4.3L) Catalytic Converter Replacement
(4.8L, 5.3L, 6.0L, 6.2L) Catalytic Converter Replacement (6.6L).
4. If equipped with a 4L80-E automatic transmission, regular production option (RPO) MT1, remove the exhaust pipe hanger bracket bolts and
bracket.
5. If equipped with a Allison(R) automatic transmission, RPO MW7, remove the exhaust pipe hanger bracket bolt/stud and bracket.
