GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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


    Object Number: 1857067  Size: SH
  1. Disconnect the auxiliary battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Reposition the auxiliary battery positive cable boot (5) from the auxiliary battery relay stud.
  3. Remove the auxiliary battery positive cable nut (6) from the battery relay stud.
  4. Remove the auxiliary battery positive cable from the auxiliary battery relay.

  5. Object Number: 1857177  Size: SH
  6. Disconnect the auxiliary battery positive cable electrical connector (1) from the battery relay.
  7. Reposition the auxiliary battery positive cable boot (5) from the auxiliary battery relay stud.
  8. Remove the auxiliary battery positive cable nut (4) from the battery relay stud.
  9. Remove the auxiliary battery positive cable from the auxiliary battery relay.

  10. Object Number: 1857383  Size: SH
  11. Remove the auxiliary battery relay nuts and relay.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1857383  Size: SH
  1. Install the auxiliary battery relay and nuts and tighten to 9 N·m (80 lb in).

  2. Object Number: 1857177  Size: SH
  3. Install the auxiliary battery positive cable to the auxiliary battery relay.
  4. Install the auxiliary battery positive cable nut (4) to the battery relay stud and tighten to 9 N·m (80 lb in).
  5. Position the auxiliary battery positive cable boot (5) to the auxiliary battery relay stud.
  6. Connect the auxiliary battery positive cable electrical connector (1) to the battery relay.

  7. Object Number: 1857067  Size: SH
  8. Install the auxiliary battery positive cable to the auxiliary battery relay.
  9. Install the auxiliary battery positive cable nut (6) to the battery relay stud and tighten to 9 N·m (80 lb in).
  10. Position the auxiliary battery positive cable boot (5) to the auxiliary battery relay stud.
  11. Connect the auxiliary battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.