GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 863648  Size: MH
  1. Disconnect the negative battery cable.
  2. Disconnect the positive battery cable.
  3. Remove the underhood fuse block (UHFB) fasteners.
  4. Turn UHFB over and open the fuse block case.

  5. Object Number: 863659  Size: SH
  6. Remove the connectors: (1-6).
  7. Remove the UHFB from the vehicle.

Installation Procedure


    Object Number: 863659  Size: SH
  1. Connect the connectors (1-6) to the fuse block.

  2. Object Number: 863648  Size: MH
  3. Route the UHFB harnesses: (A) Forward Lamp, (B) Engine, (C) Instrument Panel into fuse block case.
  4. Close and latch the fuse block case.
  5. Position the UHFB into place.
  6. Notice: Refer to Fastener Notice in the Preface section.

  7. Install the UHFB fasteners.
  8. Tighten
    Tighten the underhood fuse block fasteners to 9 N·m (80 lb in).

  9. Connect the positive battery cable.
  10. Connect the negative battery cable.