Chevrolet 4500HD Series 2019 Manual page 225

224 Driving and Operating
1. Press the cruise control main
switch to turn it on.
At this time, the cruise main
indicator light comes on
simultaneously.
2. Use the accelerator pedal to
adjust the vehicle to the
desired speed. Upon reaching
the desired speed, turn the
cruise control set switch. The
vehicle speed at the moment
you operate the switch is set in
the system, enabling you to
drive with the set speed
automatically maintained
without using the accelerator
pedal.
At the same time the cruise set
indicator light comes on.
Accelerating during Cruise
Control Driving
If you want to accelerate temporarily
to pass another vehicle while driving
using the cruise control, press the
accelerator pedal. When you
release the accelerator pedal, the
speed returns to the original set
vehicle speed.