Sierra 1500 2WD V8-6.0L Hybrid (2010)
10. Remove the exhaust muffler to exhaust manifold pipe nuts (1).
11. Loosen the exhaust muffler clamp (3).
12. Remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (2500 Series - Cab/Chassis) (See:
Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)Heated Oxygen Sensor Replacement - Bank 2
Sensor 2 (2500 Series) (See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and Repair)Heated Oxygen
Sensor Replacement - Bank 2 Sensor 2 (1500 Series) (See: Powertrain Management/Computers and Control Systems/Oxygen Sensor/Service and
Repair).
13. Lubricate the 4 insulators where the muffler assembly hangers are inserted in order to ease removal.
14. With the aid of an assistant, remove the insulators (1-4) from the front, intermediate, and rear muffler assembly hangers and remove the muffler
assembly.
Installation Procedure
