GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Avalanche - 2WD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Body Wiring Harness Junction Block Replacement

Removal Procedure
  1. Remove the cover retaining nut.
  2. Remove the cover by pushing in the tabs.

    3. Object Number: 395180 Size: SH
  3. Remove the harness from the front of the junction block.

    4. Object Number: 395181 Size: SH
  4. Remove the junction block from the bracket by pressing to release the tabs.
  5. Remove the junction block in order to gain access to the rear of the block to remove the retaining bolts.
  6. Remove the retaining bolts.
  7. Separate the wire harness block from the junction block by inserting a screw driver in between.
  8. Remove the junction block from the vehicle.

Installation Procedure
  1. Install the wire harness block to the junction block.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the retaining bolts.

    3. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  3. Install the junction block to the bracket.

    4. Object Number: 395181 Size: SH
  4. Push on the top part until it clicks in place.
  5. Connect the harness to the front of the junction block.

    6. Object Number: 395180 Size: SH
  6. Install the cover to the junction block until it clicks in place.
  7. Hand tighten the retaining nut until seated.