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Home >> Hummer >> 2009 >> H2 4D Utility Pickup >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System >> Repair Instructions >> Exhaust Muffler Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Identifying Muffler & Insulators
    GM2087747Courtesy of GENERAL MOTORS CORP.
  1. Apply lubricant to the exhaust insulators in order to aid in installation.
  2. Install the muffler (2) to the insulators (1, 3).
    3. Fig 2: Identifying Band Clamp Bolt
    GM1936687Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  3. Install the exhaust muffler nuts (1) and tighten to 40 N.m (30 lb ft).
    4. Fig 3: View Of Rear Shock Absorber Bolts & Nuts
    GM665315Courtesy of GENERAL MOTORS CORP.
  4. Raise the rear axle, using the adjustable jackstands.
  5. Install the lower bolts and nuts to the rear shock absorbers and tighten to 95 N.m (70 lb ft).
  6. Remove the adjustable jack stands from under the rear axle.
    7. Fig 4: View Of Rear Axle Vent Hose
    GM692548Courtesy of GENERAL MOTORS CORP.
  7. Install the vent hose swivel clip to the rear brake crossover pipe.
  8. Install the rear axle vent hose to the rear axle, if necessary.
    9. Fig 5: Installing Link Rods To Ball Studs
    GM613614Courtesy of GENERAL MOTORS CORP.
  9. If vehicle is equipped with RPO Z55, install the left and right sensor link rods to the sensors.
  10. Using J 38185  install the link rods to the ball studs on the sensor levers.
    11. Fig 6: Identifying Electronic Suspension Rear Position Sensor & Rear Shock - Left Side
    GM858614Courtesy of GENERAL MOTORS CORP.
  11. If vehicle is equipped with RPO Z55, connect the following left side chassis harness electrical connectors:
    • Electronic suspension rear position sensor (1)
    • Rear shock (2)
    12. Fig 7: Identifying Electronic Suspension Rear Position Sensor & Rear Shock - Right Side
    GM858616Courtesy of GENERAL MOTORS CORP.
  12. If vehicle is equipped with RPO Z55, connect the following right side chassis harness electrical connectors:
    • Electronic suspension rear position sensor (1)
    • Rear shock (2)
  13. Install the rear tires and wheels. Refer to Tire and Wheel Removal and Installation .
    14. Fig 8: View Of Spare Tire & Hoist
    GM385791Courtesy of GENERAL MOTORS CORP.
  14. Install the spare tire to the hoist.
    15. Fig 9: View Of Spare Tire
    GM385766Courtesy of GENERAL MOTORS CORP.
  15. Install the spare tire wheel stowage lock cylinder.
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