GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra - 4WD 🢒 Engine 🢒 Engine Electrical 🢒 Auxiliary Battery Positive Cable Replacement

Removal Procedure

    Object Number: 1702793 Size: SH
  1. Disconnect the auxiliary battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the underhood junction block cover.

    3. Object Number: 1702795 Size: SH
  3. Lift the junction block retainers from the locked position (3) and rotate the retainers to the open position (1).
  4. Remove the junction block.

    5. Object Number: 1702797 Size: SH
  5. Remove the auxiliary battery positive cable connector (1) from the underhood bussed electrical center (UBEC).

    6. Object Number: 1857176 Size: SH
  6. Remove the mega fuse cover (3).
  7. Disconnect the auxiliary battery positive cable electrical connector (2) from the engine wiring harness connector.
  8. Remove the relay (1) clip from the stud on the front of dash.

    9. Object Number: 1857184 Size: SH
  9. Remove the auxiliary battery positive cable nut (1) from the mega fuse holder.
  10. Remove the generator battery jumper cable nut (3) from the mega fuse holder.
  11. Remove the generator battery jumper cable terminal (2) from the mega fuse stud.
  12. Remove the auxiliary battery positive cable from the mega fuse holder.

    13. Object Number: 1857177 Size: SH
  13. Disconnect auxiliary battery positive cable electrical connector (1) from the auxiliary battery relay.
  14. Reposition the auxiliary battery positive cable boot (5).
  15. Remove the auxiliary battery positive cable nut (4) and cable from the battery relay.
  16. Remove the auxiliary battery positive cable retainer (2) from the stud on the front of dash.
  17. Remove the auxiliary battery positive cable push nuts (6).

    18. Object Number: 1857381 Size: SH
  18. Remove the auxiliary battery positive cable from the vehicle.

Installation Procedure

    Object Number: 1857381 Size: SH
  1. Install the auxiliary battery positive cable to the vehicle.

    2. Object Number: 1857177 Size: SH
  2. Install the auxiliary battery positive cable push nuts (6).
  3. Install the auxiliary battery positive cable retainer (2) to the stud on the front of dash.

    4. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the auxiliary battery positive cable and nut (4) to the battery relay and tighten to 9 N·m (80 lb in).
  5. Position the auxiliary battery positive cable boot (5).
  6. Connect auxiliary battery positive cable electrical connector (1) to the auxiliary battery relay.

    7. Object Number: 1857184 Size: SH
  7. Install the auxiliary battery positive cable to the mega fuse holder.
  8. Install the generator battery jumper cable terminal (2) to the mega fuse stud.
  9. Install the generator battery jumper cable nut (3) to the mega fuse holder and tighten to 9 N·m (80 lb in).
  10. Install the auxiliary battery positive cable nut (1) to the mega fuse holder and tighten to 9 N·m (80 lb in).

    11. Object Number: 1857176 Size: SH
  11. Connect the auxiliary battery positive cable electrical connector (2) to the engine wiring harness connector.
  12. Install the relay (1) clip to the stud on the front of dash.
  13. Install the mega fuse cover (3).

    14. Object Number: 1702797 Size: SH
  14. Install the auxiliary battery positive cable connector (1) to the UBEC.

    15. Object Number: 1702795 Size: SH
  15. Ensure that the junction block retainers are in the open position (1).
  16. Position and align the junction block to the 4 bracket pivots (2), once the pivots are engaged, push the retainers down into the locked position (3).

    17. Object Number: 1702793 Size: SH
  17. Install the underhood junction block cover.
  18. Connect the auxiliary battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.