GM Service Manual Online
For 1990-2009 cars only

Generator Replacement 2.2

Removal Procedure

  1. Disconnect the battery negative cable. Refer to

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

    in Cautions and Notices.

  2. Object Number: 43037  Size: SH
  3. Working through the wheel well, remove the generator rear brace from the engine.
  4. • Remove the generator brace to the engine block bolt.
    • Remove the generator brace to the intake manifold nuts.
  5. Remove the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  6. Disconnect the generator electrical connector.
  7. Remove the BAT feed terminal nut.
  8. Remove the BAT feed terminal wire.

  9. Object Number: 43042  Size: SH
  10. Remove the generator mounting bolts.
  11. Remove the generator from the vehicle.

Installation Procedure


    Object Number: 43042  Size: SH
  1. Install the generator to the vehicle.
  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 generator attaching bolts.
  4. Tighten

    1. Tighten the left generator bolt to 30 N·m (22 lb ft).
    2. Tighten the right generator bolt to 43 N·m (32 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.

  5. Connect the BAT feed wire to the generator.
  6. Tighten
    Tighten the BAT feed terminal nut to 8 N·m (71 lb in).

  7. Connect the electrical connector to the generator.

  8. Object Number: 43037  Size: SH
  9. Install the generator rear brace to the engine, working through the wheel well.
  10. 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.

  11. Install the generator rear brace attaching bolt and nuts.
  12. Tighten
    Tighten the generator brace nuts and bolt to 30 N·m (22 lb ft).

  13. Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  14. Connect the negative battery cable.

Generator Replacement 4.3

Removal Procedure

Caution: This vehicle is equipped with a Supplemental Inflatable Restraint (SIR) System. Failure to follow the correct procedure could cause the following conditions:

   • Air bag deployment
   • Personal injury
   • Unnecessary SIR system repairs
In order to avoid the above conditions, observe the following guidelines:
   • Refer to SIR Component Views in order to determine if you are performing service on or near the SIR components or the SIR wiring.
   • If you are performing service on or near the SIR components or the SIR wiring, disable the SIR system. Refer to Disabling the SIR System.

  1. Disconnect the battery negative cable. Refer to

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

    in Cautions and Notices.
  2. Remove the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  3. Remove the brace bolt from the back of the generator.

  4. Object Number: 43019  Size: SH
  5. Remove the generator brace nut from the exhaust manifold stud.
  6. Remove the generator brace.
  7. Remove the battery feed terminal nut from the back of the generator (under the boot).
  8. Disconnect the battery feed wire.
  9. Disconnect the voltage regulator connector.

  10. Object Number: 43033  Size: SH
  11. Remove the two generator mounting bolts.
  12. Remove the generator from the mounting bracket.

Installation Procedure


    Object Number: 43033  Size: SH
  1. Install the generator to the mounting bracket with the two generator mounting bolts.
  2. Install the brace to the back of the generator with the bolt.
  3. Install the brace nut to the exhaust manifold stud.
  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. Connect the generator BAT terminal wire. Make sure the insulating boot is covering the terminal nut.
  6. 4.1. Tighten the front generator bolt to 50 N·m (36 lb ft).
    4.2. Tighten the rear generator bolt 25 N·m (18 lb ft).
    4.3. Tighten the brace bolt 25 N·m (18 lb ft).
    4.4. Tighten the brace nut 30 N·m (22 lb ft).
    4.5. Tighten the nut on the generator BAT terminal to 8 N·m (71 lb in).
  7. Connect the voltage regulator connector.
  8. Install the accessory drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  9. Connect the negative battery cable.