GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

  2. Object Number: 74071  Size: SH
  3. Remove the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  4. Install a T-50® torx bit into the generator shaft.
  5. Remove the generator shaft nut and washer.
  6. Remove the generator pulley.

Installation Procedure


    Object Number: 74071  Size: SH

    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.

  1. Install the generator pulley, washer and shaft nut.
  2. Tighten
    Tighten the generator shaft nut to 75 N·m (55 lb ft).


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