GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 Generator Replacement

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 battery negative cable.
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-4.3L.
  3. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical-4.3L.
  4. Disconnect the regulator electrical connector.

    5. Object Number: 332407 Size: SH
  5. Remove the generator front mounting bolts.
  6. Remove the generator rear mounting bolt.
  7. Remove the generator output (BAT) terminal nut.
  8. Remove the generator.

Installation Procedure

    Object Number: 332407 Size: SH
  1. Position the generator on 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.

  2. Loosely install the mounting bolts.
  3. Install the generator output (BAT) lead.
  4. Loosely install the generator output (BAT) nut.

    5. Tighten

        • Tighten the mounting bolts to 50 N·m (37 lb ft).
        • Tighten the generator output (BAT) terminal nut to 10 N·m (89 lb in).
  5. Connect the regulator electrical connector.
  6. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical-4.3L.
  7. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls-4.3L.
  8. Connect the battery negative cable.