GM Service Manual Online
For 1990-2009 cars only

Starter Replacement LG4

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. Tilt the cab.
  3. Refer to Cab Tilting in General Information.


    Object Number: 240818  Size: SH
  4. Disconnect the electrical connectors from the starter motor.
  5. Remove the nuts and the washers that attach the starter motor to the engine.

  6. Object Number: 240816  Size: SH
  7. Remove the starter motor from the engine.
  8. Clean the following components:
  9. • The starter motor terminals
    • The electrical connectors
  10. Inspect the pinion gear teeth for wear and damage.

Installation Procedure


    Object Number: 240816  Size: SH
  1. Connect the starter motor to the engine.

  2. Object Number: 240818  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.

  3. Install the nuts and the washers that attach the starter motor to the engine.
  4. Tighten
    Tighten the starter motor mounting nuts to 82 N·m (60 lb ft).

  5. Connect the electrical connectors to the starter motor.
  6. Hold the hex-shaped base of the stud while tightening the positive battery cable nut.
  7. Tighten

    1. Tighten the positive battery cable nut to 21 N·m (16 lb ft).
    2. Tighten the solenoid bolt to 4.0 N·m (35 lb ft).
  8. Lower the cab.
  9. Connect the negative battery cable.