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Home › Hummer › 2008 › H2 4D Utility Pickup › Repair and Diagnosis › Engine Mechanical › Engine Exhaust › Repair Instructions › Muffler Replacement › Removal Procedure

Removal Procedure

    Fig 1: Locating Spare Tire
    GM385766Courtesy of GENERAL MOTORS CORP.
  1. Remove the spare tire wheel stowage lock cylinder.
    2. Fig 2: View Of Spare Tire
    GM385791Courtesy of GENERAL MOTORS CORP.
  2. Remove the spare tire from the hoist.
  3. Remove the rear tires and wheels. Refer to Tire and Wheel Removal and Installation .
    4. Fig 3: View Of Electronic Suspension Rear Position Sensor & Rear Shock - Right Side
    GM858616Courtesy of GENERAL MOTORS CORP.
  4. If vehicle is equipped with regular production option (RPO) Z55, disconnect the following right side chassis harness electrical connectors:
    • Electronic suspension rear position sensor (1)
    • Rear shock (2)
    5. Fig 4: View Of Electronic Suspension Rear Position Sensor & Rear Shock - Left Side
    GM858614Courtesy of GENERAL MOTORS CORP.
  5. If vehicle is equipped with RPO Z55, disconnect the following left side chassis harness electrical connectors:
    • Electronic suspension rear position sensor (1)
    • Rear shock (2)
    6. IMPORTANT: Do not attempt to pry the rear suspension sensor link rod from the rear position sensor ball stud.
  6. Remove the left and right sensor link rods from the sensors, perform the following:
    1. Support the sensor lever with your hand
    2. Twist the link rod in order to remove it from the ball stud
  7. Install adjustable jack stands under the rear axle.
    8. Fig 5: Rear Axle Vent Hose (8.6 or 9.5 Inch Ring Gear)
    GM692548Courtesy of GENERAL MOTORS CORP.
  8. Remove the rear axle vent hose from the rear axle, if necessary.
  9. Remove the vent hose swivel clip from the rear brake crossover pipe.
    10. Fig 6: Rear Shock Absorber Bolts And Nuts
    GM665315Courtesy of GENERAL MOTORS CORP.
  10. Remove the rear shock absorbers lower bolts and nuts.
  11. Lower the rear axle slightly, using the adjustable jack stands, in order to remove the muffler.
    12. Fig 7: Exhaust Muffler Nuts
    GM664840Courtesy of GENERAL MOTORS CORP.
  12. Remove the exhaust muffler nuts.
    13. Fig 8: Exhaust Muffler
    GM858600Courtesy of GENERAL MOTORS CORP.
  13. Remove the muffler from the insulators.
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