Sierra 2500 Denali 2WD V8-6.0L (2011)
Exhaust Pipe: Service and Repair
RPO ZW9
Exhaust Manifold Pipe Replacement (ZW9)
Removal Procedure
Warning: Refer to Exhaust Service Warning (See: Service Precautions)
Warning: Refer to Hot Exhaust System Warning (See: Service Precautions/Technician Safety Information/Hot Exhaust System Warning)
1. Remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (2500 Series - Cab/Chassis) (See:
Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2
Sensor 1 (2500 Series) (See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)Heated Oxygen
Sensor Replacement - Bank 2 Sensor 1 (1500 Series) (See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and
Repair).
2. Support the transmission with a suitable transmission jack.
3. Remove the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (2WD 1500 Series) (See: Body and
Frame/Frame/Cross-Member/Service and Repair/Transmission Support Crossmember Replacement (2WD 1500 Series))Transmission Support
Crossmember Replacement (4WD 1500 Series) (See: Body and Frame/Frame/Cross-Member/Service and Repair/Transmission Support
Crossmember Replacement (4WD 1500 Series))Transmission Support Crossmember Replacement (2WD 2500/3500 Series) (See: Body and
Frame/Frame/Cross-Member/Service and Repair/Transmission Support Crossmember Replacement (2WD 2500/3500 Series))Transmission
Support Crossmember Replacement (4WD 2500/3500 Series) (See: Body and Frame/Frame/Cross-Member/Service and Repair/Transmission
Support Crossmember Replacement (4WD 2500/3500 Series))
4. Remove the exhaust muffler to exhaust manifold pipe nuts (1).
5. Replace the exhaust gasket (2).
