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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1041 (Front Suspension System) >> Repair Instructions >> Torsion Bar Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the torsion bars to the lower control arm.
    Fig 1: Installing The Torsion Bars To The Lower Control Arm
    GM165137Courtesy of GENERAL MOTORS CORP.
  2. Install the torsion bar crossmember.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
    Fig 2: Installing The Torsion Bar Crossmember Bolts To The Weld Nuts
    GM348347Courtesy of GENERAL MOTORS CORP.
  3. Install the torsion bar crossmember bolts (1) to the weld nuts (4).

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

    4. Fig 3: Installing The Upper Link Mounting Nuts And The Bolts
    GM392162Courtesy of GENERAL MOTORS CORP.
  4. Install the upper link mounting nuts and the bolts (3).

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

  5. While supporting the adjustment arm, slide the torsion bar rearward until the torsion bar fully engages the adjustment arm.
  6. Install the J 36202  to the adjustment arm and the crossmember.
    Fig 4: Installing The J 36202 To The Adjustment Arm And The Crossmember
    GM360742Courtesy of GENERAL MOTORS CORP.
  7. Increase the tension on the adjustment arm in order to load the torsion bar.
    8. IMPORTANT: Install the adjustment bolt the same amount of turns that were required to remove the bolt during removal.
    Fig 5: Installing The Adjustment Bolt And The Adjuster Nut (Vehicles Without MN8, MT1 AND MW3)
    GM348349Courtesy of GENERAL MOTORS CORP.
  8. Install the adjustment bolt (3) and the adjuster nut (4).
  9. Install the adjustment bolt (3) and the adjuster nut (4), for vehicles with MN8, MT1 AND MW3.
    Fig 6: Installing The Adjustment Bolt And The Adjuster Nut (Vehicles With MN8, MT1 AND MW3)
    GM348345Courtesy of GENERAL MOTORS CORP.
  10. Remove the J 36202  releasing the tension on the torsion bar until the load is taken up by the adjustment bolt.
  11. Remove the safety stands.
  12. Lower the vehicle.
  13. Measure the Z height. Refer to Trim Height Inspection Procedure in Suspension General Diagnosis.
  14. Turn the adjustment bolt (2) clockwise to increase the Z height and counterclockwise to decrease the Z height.
    Fig 7: Turning The Adjustment Bolt To Change Z Height
    GM516269Courtesy of GENERAL MOTORS CORP.
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