GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 LeSabre 🢒 Body 🢒 Doors 🢒 Rear Electrical Center or Junction Block Replacement

Removal Procedure
  1. Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

    3. Object Number: 471716 Size: SH

    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.

  3. Remove the rear fuse block cover.
  4. Remove the positive battery cable nut (1) and cable from the rear electrical center.
  5. Release the four retaining clips.
  6. Lift the electrical center up and turn over.
  7. Remove the three connector fasteners and remove all the connectors from the fuse block.

Installation Procedure

    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.

  1. Install all the connectors to the rear fuse block and hand start the fasteners.

    2. Tighten
    Tighten the fasteners to 7 N·m (62 lb in).


    Object Number: 471716 Size: SH
  2. Install the rear electrical center into the base assembly ensuring all the clips engage.
  3. Install the positive battery cable and nut (1).

    4. Tighten
    Tighten the nut to 15 N·m (11 lb ft).

  4. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.
  5. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.