GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 TopKick C-Series Commercial (Cutaway) C4/C5 🢒 Brakes 🢒 Air Brakes 🢒 Air Brake Reservoir Filling

Standard Method
  1. Charge the air system.

    2. Start the engine and allow the air compressor to fill the air system.

  2. Remove the wheel blocks.

Optional Method

    Object Number: 1486572 Size: SH
  1. Connect a compressed air line to the inflation valve (1).
    2. • Ensure that the compressed air is free of moisture.
    • Do not fill the system with more than 861 kPa (125 psi) of air pressure.
  2. Disconnect the compressed air line.
  3. Remove the wheel blocks.