GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 13203  Size: SH
  1. Disconnect the negative battery cable.
  2. 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.

  3. Raise the vehicle and suitably support. Refer to Section 0A .
  4. Caution: Provide additional support when a vehicle is on a hoist in the following ways:

       • Before removing parts, support the opposite end. This helps prevent the vehicle from slipping off.
       • Before removing major components, chain the vehicle frame to the hoist pads at the same end as the removal. This helps avoid a tip-off.
    Failure to follow these precautions could cause vehicle damage, serious personal injury, or death.

  5. Remove the ignition coils (1) from the module.
  6. Remove the module (2) from the assembly plate.

Installation Procedure


    Object Number: 13203  Size: SH
  1. Install the module to the assembly plate (2).
  2. Install the Ignition Coils (1).
  3. Lower the vehicle.
  4. Connect the negative battery cable