GM Service Manual Online
For 1990-2009 cars only

Generator Replacement LN2

Removal Procedure

  1. Disconnect the negative battery cable at the battery. Refer to

    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.

    .
  2. Disconnect the generator electrical connections.
  3. Remove the generator drive belt.
  4. Remove the through bolts that retain the generator.

  5. Object Number: 97634  Size: SH
  6. Remove the generator.

Installation Procedure


    Object Number: 97634  Size: SH
  1. Install the generator to the mounting bracket with the bolts and the washers.
  2. install the generator nuts
  3. Tighten

        • Tighten the generator nuts (2) to 43 N·m (32 lb ft).
        • Tighten the generator bolt (5) to 50 N·m (37 lb ft).
        • Tighten the generator bolt (1) to 30 N·m (22 lb ft).

    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.

  4. Install the generator drive belt.
  5. Caution: Before removing or installing any electrical unit, or when a tool or equipment could easily come in contact with "live" or "hot all the times" exposed electrical terminals, disconnect the negative battery cable to help prevent personal injury and/or damage to the vehicle or components. Unless instructed otherwise, the ignition switch must be in the OFF or LOCK position.

  6. Connect the generator electrical connections.
  7. Connect the negative cable at the battery.

Generator Replacement LD9

Removal Procedure

  1. Disconnect the negative battery cable. Refer to

    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.

    in General Information.
  2. Caution: Use a tight fitting 13 mm wrench that is at least 46 cm (18 in) long or J 37059 when rotating the drive belt tensioner in order to avoid personal injury.

  3. Remove the serpentine belt. Refer to Drive Belt Replacement or Drive Belt Replacement in Engine Mechanical.
  4. Remove the generator mounting bolts.
  5. Caution: Before removing or installing any electrical unit, or when a tool or equipment could easily come in contact with "live" or "hot all the times" exposed electrical terminals, disconnect the negative battery cable to help prevent personal injury and/or damage to the vehicle or components. Unless instructed otherwise, the ignition switch must be in the OFF or LOCK position.

  6. Disconnect the generator electrical connections.

  7. Object Number: 97629  Size: SH
  8. Remove the generator assembly.

Installation Procedure


    Object Number: 97629  Size: SH
  1. Install the generator assembly.
  2. Caution: Before removing or installing any electrical unit, or when a tool or equipment could easily come in contact with "live" or "hot all the times" exposed electrical terminals, disconnect the negative battery cable to help prevent personal injury and/or damage to the vehicle or components. Unless instructed otherwise, the ignition switch must be in the OFF or LOCK position.

  3. Reconnect the generator electrical connections.
  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. Install the generator mounting bolts.
  6. Tighten
    Tighten the mounting bolts to 50 N·m (37 lb ft).

    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.

    Caution: Use a tight fitting 13 mm wrench that is at least 46 cm (18 in) long or J 37059 when rotating the drive belt tensioner in order to avoid personal injury.

  7. Install the serpentine belt. Refer to Drive Belt Replacement or Drive Belt Replacement in Engine Mechanical.
  8. Connect the negative battery cable.