GM Service Manual Online
For 1990-2009 cars only

175 Amp Mega Fuse Replacement With Auxiliary Battery

Removal Procedure


    Object Number: 1857176  Size: SH
  1. Disconnect the auxiliary battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the mega fuse cover.

  3. Object Number: 1857420  Size: SH
  4. Remove the starter solenoid cable nut (1) from the fuse stud.
  5. Remove the starter solenoid cable terminal (2) from the fuse stud.

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

  11. Object Number: 1857459  Size: SH
  12. Remove the upper mega fuse nut (1), if necessary.
  13. Remove the appropriate mega fuse (2).

Installation Procedure


    Object Number: 1857459  Size: SH
  1. Install the appropriate mega fuse (2).
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the upper mega fuse nut (1), if necessary.
  4. Tighten
    Tighten the nut to 15 N·m (11 lb ft).


    Object Number: 1857184  Size: SH
  5. Install the auxiliary battery positive cable to the fuse studs.
  6. Install the generator battery jumper cable terminal (2) to the fuse stud.
  7. Install the generator battery jumper cable to fuse nut (3).
  8. Tighten
    Tighten the nut to 9 N·m (80 lb in).

  9. Install the auxiliary battery positive cable nut (1) to the mega fuse holder.
  10. Tighten
    Tighten the nut to 15 N·m (11 lb ft).


    Object Number: 1857420  Size: SH
  11. Install the starter solenoid cable terminal (2) to the fuse stud.
  12. Install the starter solenoid cable nut (1) to the fuse stud.
  13. Tighten
    Tighten the nut to 15 N·m (11 lb ft).


    Object Number: 1857176  Size: SH
  14. Install the mega fuse cover.
  15. Connect the auxiliary battery negative cable. Refer to Battery Negative Cable Disconnection and Connection.

175 Amp Mega Fuse Replacement With Single Battery

Removal Procedure


    Object Number: 1702800  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the fuse cover.

  3. Object Number: 1702504  Size: SH
  4. Remove the starter solenoid cable nut (1) from the fuse stud.
  5. Remove the starter solenoid cable terminal (2) from the fuse stud.

  6. Object Number: 1699546  Size: SH
  7. Remove the generator battery jumper cable to fuse nut (3).
  8. Remove the generator battery jumper cable terminal (4) from the fuse stud.
  9. Remove the positive battery cable terminal from the fuse stud.

  10. Object Number: 1714852  Size: SH
  11. Remove the fuse from the holder.

Installation Procedure


    Object Number: 1714852  Size: SH
  1. Install the fuse to the holder.

  2. Object Number: 1699546  Size: SH
  3. Install the positive battery cable terminal to the fuse stud.
  4. Install the generator battery jumper cable terminal (4) to the fuse stud.
  5. Caution: Refer to Fastener Caution in the Preface section.

  6. Install the generator battery jumper cable to fuse nut (3).
  7. Tighten
    Tighten the nut to 15 N·m (11 lb ft).


    Object Number: 1702504  Size: SH
  8. Install the starter solenoid cable terminal (2) to the fuse stud.
  9. Install the starter solenoid cable nut (1) to the fuse stud.
  10. Tighten
    Tighten the nut to 15 N·m (11 lb ft).


    Object Number: 1702800  Size: SH
  11. Install the fuse cover.
  12. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.