Driver Control Switches

Driver Control Switches - Ops

Vehicles with manual transmissions allow the driver to turn the engine brake on and off and select a Low, Medium, or High level of braking.

EPA07 Engine

  • The "Low" setting on this switch activates braking on two cylinders, yielding about one-third engine braking horsepower.
  • The "Medium" setting on this switch activates four cylinders, supplying about two-thirds engine braking horsepower.
  • The "High" setting on this switch activates all six cylinders, providing full engine brake horsepower.

EPA10/GHG14/GHG17 Engine

  • The "Low" setting on this switch activates braking on three cylinders, yielding about one-third engine braking horsepower.
  • The "Medium" setting on the switch activates all six cylinders, supplying about two thirds engine braking horsepower.
  • The "High" setting on the switch activates all six cylinders, supplying full engine brake horsepower.
Note: There is very little difference in the exhaust sound when the EPA10/GHG14/GHG17 engine brakes are activated in either the medium or high position. The GHG17 platform engines will experience slightly different engine brake logic provided by enhancements within CPC software.
Note:
Parent topic: Engine Brake System
Document Number: 0000022348
Manual Publication Date: 2024-03-05
Topic Publication Date: 2023-12-10