GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: When a lift window hold open device is being removed or installed, provide alternate support to avoid the possibility of damage to the vehicle or personal injury.

    Notice: Apply pressure only at the end of the liftgate/hood assist rod that you are removing or attaching. Do NOT apply pressure to the middle of the rod because damage or bending will result.

  1. Raise the rear liftgate and support.

  2. Object Number: 392580  Size: MH
  3. Remove the bolt (4) from the rear liftgate strut rod (3) and from the body.
  4. Use a flat-bladed tool to remove the strut from the mounts.
  5. Remove the rear lift panel strut (2) from the rear trunk lid mount (1) and remove the strut from the vehicle.

Installation Procedure


    Object Number: 392580  Size: MH

    Important: Install the strut by firmly pressing into place on mounts until you hear a snap. Tug on the strut to ensure that the unit is securely installed.

  1. Install the rear lift panel strut (2) to the rear trunk lid mount (1).
  2. Notice: 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 bolt (4) to rear liftgate strut rod (3) and body.
  4. Tighten
    Tighten the bolt to 27 N·m (20 lb  ft).

  5. Remove the support and close the liftgate.