Chevrolet Silverado / GMC Sierra. Service manual — part 1846

Fig. 205: Rear Axle Vent Hose (10.5 Inch Ring Gear)
Courtesy of GENERAL MOTORS CORP.

6. If equipped with a 10.5 inch ring gear, remove the rear axle vent hose from the rear axle, if

necessary.

7. Remove the vent hose swivel clip from the rear brake crossover pipe, if necessary.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 206: Rear Shock Absorber Bolts And Nuts (6.0L, 6.6L, and 8.1L Engines)
Courtesy of GENERAL MOTORS CORP.

8. Remove the rear shock absorber lower bolts and nuts, if necessary.

9. Lower the rear axle using the adjustable jack stands, if necessary.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 207: View Of Exhaust Muffler, Exhaust Manifold Pipe, Gasket & Nuts
Courtesy of GENERAL MOTORS CORP.

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 (1500 Series) or Heated Oxygen Sensor Replacement - Bank 2
Sensor 2 (2500 Series) or Heated Oxygen Sensor Replacement - Bank 2 Sensor 2
(2500 Series - Cab/Chassis) .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 208: View Of Muffler Assembly Insulators
Courtesy of GENERAL MOTORS CORP.

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

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado