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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Engine Exhaust) >> Repair Instructions >> Muffler Replacement (4.8L and 5.3L Engines) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Exhaust Muffler
    GM858600Courtesy of GENERAL MOTORS CORP.
  1. Apply lubricant to the exhaust insulators in order to aid in installation.
  2. Install the muffler to the insulators.
    3. Fig 2: View Of Exhaust Muffler Nuts
    GM664840Courtesy of GENERAL MOTORS CORP.
    NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  3. Install the exhaust muffler nuts.

    Tighten:  Tighten the nuts to 40 N.m (30 lb ft).

    4. Fig 3: View Of Rear Shock Absorbers Lower 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.

    Tighten:  Tighten the bolts to 95 N.m (70 lb ft).

  6. Remove the adjustable jack stands from under the rear axle.
    7. Fig 4: Rear Axle Vent Hose (8.6 or 9.5 Inch Ring Gear)
    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 Using J 38185
    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: View Of Electronic Suspension Rear Position Sensor & Rear Shock - Left Side (RPO Z55)
    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: View Of Electronic Suspension Rear Position Sensor & Rear Shock - Right Side (RPO Z55)
    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 in Tires and Wheels.
    14. Fig 8: View Of Spare Tire
    GM385791Courtesy of GENERAL MOTORS CORP.
  14. Install the spare tire to the hoist.
    15. Fig 9: Locating Spare Tire
    GM385766Courtesy of GENERAL MOTORS CORP.
  15. Install the spare tire wheel stowage lock cylinder.
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