GM Service Manual Online
For 1990-2009 cars only

Drive Belt Replacement Accessory

Removal Procedure


    Object Number: 394028  Size: SH
  1. Position a hex-head socket on the drive belt tensioner pulley.
  2. Rotate the accessory drive belt tensioner clockwise to reduce tension on the accessory drive belt during removal or installation.

  3. Object Number: 74089  Size: SH
  4. Remove the accessory drive belt (5).
  5. Important: In order for the belt to track properly, both the belt grooves and the crankshaft balancer grooves should be free of all dirt or debris.

  6. Clean the belt grooves of all dirt or debris with a wire brush.
  7. Clean the crankshaft balancer grooves of all dirt or debris with solvent.
  8. Dry the crankshaft balancer with compressed air.

Installation Procedure


    Object Number: 74089  Size: SH
  1. Route the accessory drive belt (5).
  2. 1.1. Rotate the accessory drive belt tensioner clockwise to reduce tension on the accessory drive belt.
    1.2. Position the drive belt on the water pump pulley last.
  3. Inspect to insure that the accessory drive belt is aligned properly in the power steering pump pulley, idler, generator, crankshaft pulley, water pump pulley and the tensioner grooves.

Drive Belt Replacement Air Conditioning

Removal Procedure


    Object Number: 394028  Size: SH
  1. Position a hex-head socket on the drive belt tensioner pulley.
  2. Rotate the accessory drive belt tensioner clockwise to reduce tension on the accessory drive belt during removal or installation.

  3. Object Number: 74089  Size: SH
  4. Remove the accessory drive belt (5).

  5. Object Number: 394112  Size: SH
  6. Rotate the air conditioning (AC) drive belt tensioner clockwise to reduce tension on the AC drive belt.
  7. Remove the AC drive belt.
  8. Important: In order for the belt to track properly, both the belt grooves and the crankshaft balancer grooves should be free of all dirt or debris.

  9. Clean both of the belts grooves with a wire brush.
  10. Clean the crankshaft balancer grooves of all dirt or debris with solvent.
  11. Dry the crankshaft balancer with compressed air.

Installation Procedure


    Object Number: 289958  Size: SH
  1. Install the AC drive belt.
  2. Inspect to insure that the AC belt is aligned properly in the AC compressor, idler, crankshaft pulley, and the AC belt tensioner (1) grooves.

  3. Object Number: 74089  Size: SH
  4. Install the accessory drive belt (5). Refer to Drive Belt Replacement .