Exhaust Pipe/Muffler Hanger: Service and Repair

Exhaust Hanger Mounting Bracket Replacement

Removal Procedure





1. If equipped with a 6.0L engine, remove the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement (Exhaust Manifold Pipe Replacement) .
2. If equipped with a 6.0L engine, remove the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side (With Cab Chassis) (Service and Repair) .
3. If equipped with a 6.6L engine, remove the catalytic converter. Refer to Catalytic Converter Replacement (With LU3) (Service and Repair)Catalytic Converter Replacement (With V8 Engine) (Service and Repair)Catalytic Converter Replacement (With LMM) (Service and Repair) .
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.




6. If equipped with a 6L90-E automatic transmission, RPO MYD, remove the exhaust pipe hanger bracket bolts and bracket.



Installation Procedure





Caution: Refer to Fastener Caution (Fastener Caution) .
1. If equipped with a 6L90-E automatic transmission, RPO MYD, install the exhaust pipe hanger bracket and bolts and tighten to 25 Nm (18 lb ft) .




2. If equipped with a Allison(R) automatic transmission, RPO MW7, install the exhaust pipe hanger bracket and bolt/stud and tighten to 25 Nm (18 lb ft) .




3. If equipped with a 4L80-E automatic transmission, RPO MT1, install the exhaust pipe hanger bracket and bolts and tighten to 25 Nm (18 lb ft) .
4. If equipped with a 6.6L engine, install the catalytic converter. Refer to Catalytic Converter Replacement (With LU3) (Service and Repair)Catalytic Converter Replacement (With V8 Engine) (Service and Repair)Catalytic Converter Replacement (With LMM) (Service and Repair) .
5. If equipped with a 6.0L engine, install the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side (With Cab Chassis) (Service and Repair) .
6. If equipped with a 6.0L engine, install the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement (Exhaust Manifold Pipe Replacement) .