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Installation Procedure

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  1. Apply lubricant to the exhaust insulators in order to aid in installation.
  2. Install the muffler to the insulators.
    3. Fig 1: Installing Muffler To Insulators
    G02119466Courtesy of GENERAL MOTORS CORP.
  3. Install the exhaust muffler nuts.
    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.

    Tighten 

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

    4. Fig 2: Installing Exhaust Muffler Nuts
    G02119467Courtesy 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. Fig 3: Installing Lower Bolts And Nuts To Rear Shock Absorbers
    G02119468Courtesy of GENERAL MOTORS CORP.
  6. Remove the adjustable jack stands from under the rear axle.
  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 4: Installing Rear Axle Vent Hose
    G02119469Courtesy 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 5: Installing Link Rods To Ball Studs On Sensor Levers Using J 38185
    G02119470Courtesy 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)
      • Fig 6: Installing Electronic Suspension Rear Position Sensor And Rear Shock
      G02119471Courtesy of GENERAL MOTORS CORP.
    • Rear shock (2)
  12. If vehicle is equipped with RPO Z55, connect the following right side chassis harness electrical connectors:
    • Electronic suspension rear position sensor (1)
      • Fig 7: Installing Electronic Suspension Rear Position Sensor And Rear Shock
      G02119472Courtesy of GENERAL MOTORS CORP.
    • Rear shock (2)
  13. Install the rear tires and wheels. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION in Tires and Wheels.
  14. Install the spare tire to the hoist.
    15. Fig 8: Installing Spare Tire To Hoist
    G02119473Courtesy of GENERAL MOTORS CORP.
  15. Install the spare tire wheel stowage lock cylinder.
    16. Fig 9: Installing Spare Tire Wheel Stowage Lock Cylinder
    G02119474Courtesy of GENERAL MOTORS CORP.
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