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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 214 (Front Suspension System) >> Repair Instructions >> Torsion Bar and Support Assembly Replacement >> Installation Procedure

Installation Procedure

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  1. Install the torsion bars to the lower control arm.
    Fig 1: Installing the torsion bars to the lower control arm
    G01269730Courtesy of GENERAL MOTORS CORP.
  2. Install the torsion bar support.
    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 torsion bar support bolts.

    Tighten 

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

    Fig 2: Installing the torsion bar support bolts
    G01269731Courtesy of GENERAL MOTORS CORP.
  4. While supporting the adjustment arm, slide the torsion bar rearward until the torsion bar fully engages the adjustment arm.
  5. Install the J 36202  to the adjustment arm and the support.
  6. Increase the tension on the adjustment arm in order to load the torsion bar.
    Fig 3: Increasing the tension on the adjustment arm
    G01269732Courtesy of GENERAL MOTORS CORP.

    Important:  Install the adjustment bolt the same amount of turns that were required to remove the bolt during removal.

  7. Install the adjustment bolt and the adjuster nut.
  8. Remove the J 36202  releasing the tension on the torsion bar until the load is taken up by the adjustment bolt.
  9. Lower the vehicle.
  10. Measure the Z height. Refer to Trim Height Inspection Procedure in General Suspension Diagnosis .
    Fig 4: Installing the adjustment bolt and the adjuster nut
    G01269733Courtesy of GENERAL MOTORS CORP.
  11. Turn the adjustment bolt clockwise to increase the Z height and counterclockwise to decrease the Z height.
    Fig 5: Adjusting Z Height
    G01269734Courtesy of GENERAL MOTORS CORP.
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