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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 518 (Engine Exhaust System) >> Repair Instructions >> Exhaust Muffler Replacement (LC9, LMG, LZ1, L20) >> Installation Procedure

Installation Procedure

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    Fig 1: View Of Exhaust System Hangers
    GM1709380Courtesy of GENERAL MOTORS COMPANY
  1. Lubricate the insulators where the muffler assembly hangers are inserted for ease of installation.
    2. NOTE:

    During installation, do not over extend the flex coupler as internal damage may occur.

  2. With the aid of an assistant, install the muffler assembly.
  3. With the aid of an assistant, install the insulators to the exhaust system hangers (1, 2, and 3).
    4. Fig 2: View Of Exhaust System Hanger & Insulator
    GM1709383Courtesy of GENERAL MOTORS COMPANY
  4. Install the insulator to the exhaust system hanger near the resonator.
    5. Fig 3: Band Clamp
    GM1936687Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  5. Position the muffler assembly to the three-way catalytic converter and tighten the norma clamp bolt to 28 (21 lb ft)
  6. Raise the rear axle into position using the adjustable jack.
    7. Fig 4: View Of Right Axle Tie Rod Bolt & Nut
    GM1709061Courtesy of GENERAL MOTORS COMPANY
  7. Install the right rear shock absorber lower bolt and nut and tighten to 95 (70 lb ft).
  8. Install the right rear stabilizer shaft link to the frame.
  9. Install the right rear stabilizer shaft link to frame bolt and nut and tighten to 65 (48 lb ft).
  10. Install the right rear axle tie rod bolt (2) and nut (1).
    11. Fig 5: Rear Axle Vent Hose (8.6 or 9.5 Inch Ring Gear)
    GM692548Courtesy of GENERAL MOTORS COMPANY
  11. 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. Using the J 38185  hose clamp pliers install the right rear link rod to the ball studs on the sensors.
    14. NOTE:

    The rear axle wiring harness clip is a one way clip with a D-shape section. The clip can only be installed and/or removed in only one direction.

  14. Install the right rear wheel speed sensor wiring harness clips to the frame and the control arm bracket.
  15. Install the right rear wheel speed sensor wiring harness electrical connector clip to the frame.
    16. Fig 6: View Of Chassis Wiring Harness Electrical Connectors & Right Rear Wheel Speed Sensor Wiring Harness Electrical Connector
    GM1709051Courtesy of GENERAL MOTORS COMPANY
  16. If the vehicle is equipped with RPO Z55, connect the right rear air line to the shock absorber.
  17. If the vehicle is equipped with RPO Z55, connect the chassis wiring harness electrical connector (3) to the right rear shock absorber.
  18. Connect the chassis wiring harness electrical connector (1) to the right rear wheel speed sensor wiring harness electrical connector (2).
  19. Lower the vehicle.
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