GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

The generator is serviced as a complete unit only.

  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the drive belt from the generator. Refer to Drive Belt Replacement in Engine Mechanical.
  3. Place the coolant recovery reservoir aside for access. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.

  4. Object Number: 528144  Size: SH
  5. Position aside the protective boot (1) from the generator output BAT terminal.
  6. Disconnect the electrical connector (2) from the generator.

  7. Object Number: 528149  Size: SH
  8. Remove the generator output BAT terminal nut (1) and disconnect the battery (positive) lead (2) from the generator.

  9. Object Number: 302473  Size: MH
  10. Remove the bolts (1,2,3) from the generator.
  11. Remove the generator.

Installation Procedure

  1. Install the generator.

  2. Object Number: 302473  Size: MH
  3. Place the generator bolt (2) and generator bracket bolt (3) through the holes on the generator.
  4. Position the generator to the generator bracket and finger start the bolts. Do not tighten the bolts.
  5. 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.

  6. Install the generator pivot bolt (1) through the generator and into the generator rear brace. Do not tighten the bolt.
  7. Tighten the generator bolts in the order described. The following is a mandatory torque sequence:
  8. Tighten
    Tighten the generator pivot bolt (1) to 50 N·m (37 lb  ft).

    Tighten
    Tighten the generator bolt (2) to 50 N·m (37 lb  ft).

    Tighten
    Tighten the generator bracket bolt (3) to 50 N·m (37 lb ft).


    Object Number: 528149  Size: SH
  9. Connect the battery (positive) lead (2) and install the generator output BAT terminal nut (1).
  10. Tighten
    Tighten the generator output BAT terminal nut to 20 N·m (15 lb ft).


    Object Number: 528144  Size: SH
  11. Press the protective boot (1) on to the generator output BAT terminal.
  12. Connect the electrical connector (2) to the generator.
  13. Install the coolant recovery reservoir . Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
  14. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  15. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .