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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1624 (Engine Exhaust System) >> Repair Instructions >> Exhaust Muffler Replacement (1500 Series and 6.2L) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Tail Pipe Hanger Insulator
    GM1856812Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the 5 insulators where the muffler assembly hangers are inserted in order to ease installation.
  2. With the aid of an assistant, position and install the muffler assembly.
  3. Install the insulator (1) to the rear tail pipe hanger.
    4. Fig 2: View Of Muffler Assembly Insulators
    GM1856810Courtesy of GENERAL MOTORS CORP.
  4. Install the insulators (1-3) to the front, intermediate, and rear muffler assembly hangers.
    5. Fig 3: View Of Catalytic Converter To Muffler Nuts
    GM1708705Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  5. Install the catalytic converter to muffler nuts and tighten to 45 N.m (33 lb ft).
    6. Fig 4: Catalytic To Exhaust Muffler Clamp Nut
    GM2309758Courtesy of GENERAL MOTORS CORP.
  6. For mufflers using a exhaust muffler clamp (Norma), install the catalytic converter to the exhaust muffler nut (1) and tighten the clamp to 28 N.m (21 lb ft)
    7. Fig 5: View Of Rear Shock Absorbers Lower Bolts & Nuts
    GM665315Courtesy of GENERAL MOTORS CORP.
  7. Raise the rear axle using the adjustable jack stands, if necessary.
  8. Install the rear shock absorber lower bolts and nuts, if necessary and tighten to 95 N.m (70 lb ft).
    9. Fig 6: Rear Axle Vent Hose (10.5 Inch Ring Gear)
    GM695038Courtesy of GENERAL MOTORS CORP.
  9. If equipped with a 10.5 inch ring gear, install the rear axle vent hose to the rear axle, if necessary.
  10. Connect the vent hose swivel clip to the rear brake crossover pipe, if necessary.
    11. Fig 7: Rear Axle Vent Hose (8.6 or 9.5 Inch Ring Gear)
    GM692548Courtesy of GENERAL MOTORS CORP.
  11. If equipped with a 8.6 or a 9.5 inch ring gear, install the rear axle vent hose to the rear axle, if necessary.
  12. Install the vent hose swivel clip to the rear brake crossover pipe, if necessary.
  13. Remove the adjustable jack stands from under the rear axle, if necessary.
  14. Install the spare tire, if necessary.
  15. Lower the vehicle.
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