GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

  2. Object Number: 881120  Size: SH
  3. Press tabs (3) inward to lift and remove the junction block cover (1).
  4. Note location and remove harness end nuts (2) and remove harness ends from fuse block relay center.

  5. Object Number: 881124  Size: SH
  6. Remove the fuse block center bolts and remove fuse relay center from the junction block.

  7. Object Number: 881126  Size: SH
  8. Remove from the junction block base the chassis harness (1), the I/P harness (2), the engine harness (3), and the forward LP harness (4).

  9. Object Number: 881131  Size: SH
  10. Remove the junction block base by pressing tabs (1) then slide tabs (2) out.

Installation Procedure


    Object Number: 881131  Size: SH
  1. Install the junction block base by sliding tabs (2) in and pressing in tabs (1) until they are locked.

  2. Object Number: 881126  Size: SH
  3. Install into the junction block base the chassis harness (1), the I/P harness (2), the engine harness (3), and the forward LP harness (4).

  4. Object Number: 881124  Size: SH
  5. Install the fuse relay center into the junction block.
  6. Install the fuse block center bolts.

  7. Object Number: 881120  Size: SH
  8. Install the harness ends on the fuse block relay center.
  9. Install the harness end nuts (2).
  10. Install the junction block cover (1) the tabs (3) should lock.
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .