GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1313335  Size: SH
  1. Remove the battery. Refer to Battery Replacement .
  2. Remove the air conditioning (A/C) evaporator outlet hose bolt from the battery box.
  3. Position the A/C evaporator outlet hose out of the way.

  4. Object Number: 934966  Size: SH
  5. Remove the underhood fuse block (UHFB) cover (1).
  6. Remove the positive battery cable and electronic power steering (EPS) wire connection nut.
  7. Remove the positive battery cable and electronic power steering (EPS) wire (2) from the B+ terminal at UHFB.

  8. Object Number: 1371145  Size: SH
  9. Remove the engine wire harness retainer (1) from the battery box.
  10. Remove the engine wire harness connector (2) from the battery box.

  11. Object Number: 1313336  Size: SH
  12. Loosen the UHFB connector retaining bolts.
  13. Unclip and remove the UHFB from the UHFB housing.
  14. Disconnect the forward lamp harness connectors from the UHFB.
  15. Disconnect the UHFB connectors from the UHFB.
  16. Important: Protect the disconnected harness from contamination during service.

  17. Remove the UHFB connectors from the UHFB housing.
  18. Position all the electrical harnesses/connectors and battery cables out of the way of the battery box.

  19. Object Number: 1313334  Size: SH
  20. Remove the coolant surge tank bolts from the inner fender.
  21. Lift the coolant surge tank up to gain access to the battery box bolt on the inner fender.

  22. Object Number: 1371153  Size: SH
  23. Remove the battery box bolt (2) from under the coolant surge tank.
  24. Remove the battery box bolts (1) from inside the battery box.

  25. Object Number: 951477  Size: SH
  26. Separate the air inlet duct from the battery box.
  27. Remove the battery box from the vehicle.

Installation Procedure


    Object Number: 951477  Size: SH

    Important: Alignment of the air inlet and outlet ducts with the battery box is critical to ensure proper airflow to the battery.

  1. Install the battery box to the vehicle while aligning the air inlet and outlet ducts to the battery box.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1371153  Size: SH

    Important: Insure the battery box is sitting properly on the battery tray and the air inlet and outlet ducts are properly installed to the battery box.

  3. Install the battery box bolts (1) inside the battery box.
  4. Tighten
    Tighten the bolts (1) to 15 N·m (11 lb ft).

  5. Install the battery box outer bolt (2) under the coolant surge tank.
  6. Tighten
    Tighten the bolt (2) to 10 N·m (89 lb in).


    Object Number: 1313334  Size: SH

    Important: Insure the coolant surge tank alignment tab is inserted into the inner fender slot when installed.

  7. Install the coolant surge tank to the inner fender.
  8. Install the coolant surge tank bolts
  9. Tighten
    Tighten the bolts to 6 N·m (53 lb in).


    Object Number: 1313336  Size: SH
  10. Position the battery cables into the battery box.
  11. Install the UHFB connectors to the UHFB housing.
  12. Connect the forward lamp harness connectors to the UHFB.
  13. Install the UHFB to the UHFB housing while insuring that all UHFB electrical connectors are properly aligned.
  14. Insure the UHFB is fully installed and clipped into the UHFB housing.
  15. Tighten
    Tighten the UHFB connector bolts to 4 N·m (35 lb in).


    Object Number: 1371145  Size: SH
  16. Install the engine wire harness connector (2) to the battery box.
  17. Install the engine wire harness retainer (1) to the battery box.

  18. Object Number: 934966  Size: SH
  19. Install the positive battery cable and electronic power steering (EPS) wire (2) to the B+ terminal at UHFB.
  20. Install the positive battery cable and electronic power steering (EPS) wire connection nut.
  21. Tighten
    Tighten the nut to 15 N·m (11 lb ft).

  22. Install the underhood fuse block (UHFB) cover (1).

  23. Object Number: 1313335  Size: SH
  24. Position the A/C evaporator outlet hose to the battery box.
  25. Install the A/C evaporator outlet hose bolt to the battery box.
  26. Tighten
    Tighten the bolt to 15 N·m (11 lb ft).

  27. Install the battery. Refer to Battery Replacement .