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Home >> GMC >> 2023 >> Hummer EV Edition 1 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Front Brake Front Pipe Replacement - Left Side >> Removal Procedure

Removal Procedure

    WARNING:

    Always ensure the Battery Maintenance Mode is inactive before disconnecting the 12 volt battery. This mode can be active with the ignition off, regardless of whether the vehicle charging cord is plugged in or not. When this mode is active, the on-board high voltage battery charger will energize the 12 volt battery cables and charge the 12 volt battery. Disconnecting the battery cables while this mode is active may result in an electrical shock or a burn from hot battery cable leads.

  1. Check the 12 volt battery voltage with a digital multimeter before disconnecting any battery cables leads. If the voltage is 13.5 volts or above, the Battery Maintenance Mode is active. The technician must wait for the T18 battery charger to deactivate before disconnecting the battery negative cable. Charging System Description and Operation
  2. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  3. Raise and support the vehicle. Lifting and Jacking the Vehicle
  4. Remove the left front tire and wheel assembly. Tire and Wheel Removal and Installation
  5. GM5844333Courtesy of GENERAL MOTORS COMPANY

    Front Wheelhouse Liner Bolt (2) - Remove

  6. Position the front wheelhouse rear liner (1) aside as needed to gain access to the left front brake front pipe.
  7. GM5844329Courtesy of GENERAL MOTORS COMPANY

    Rear Brake Rear Pipe Nut (2) - Remove

  8. Front Brake Pipe Clip (1) - Remove [2x]
  9. Plug the front brake hose inlet to avoid fluid loss and contamination.
  10. GM5844330Courtesy of GENERAL MOTORS COMPANY

    Rear Brake Rear Pipe Nut (1) - Remove

  11. Cap the front brake rear pipe outlet to avoid fluid loss and contamination.
  12. GM5844331Courtesy of GENERAL MOTORS COMPANY

    Remove the left front brake front pipe (1) from the vehicle.