GM Service Manual Online
For 1990-2009 cars only
  1. Install the tensioner.
  2. Install the 2 bolts on the tensioner finger tight.
  3. Install the drive belt to the tensioner.
  4. 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.

  5. Using a hexagon wrench, turn the tension bolt clockwise in order to obtain 4-9 mm (0.16-0.35 in) of belt deflection under 10 kg (22 lbs) of force.
  6. Tighten
    Tighten the tensioner bolts to 25 N·m (18.5 lb ft).