See also:

Reducing Speed While Using Cruise Control
If the cruise control system is already activated: • Move the thumbwheel toward SET/− and hold until the desired lower speed is reached, then release it. • To slow down in small am ...

SERVICE BRAKE ASSIST
This message may be displayed when there is a problem with the brake boost assist system. When this message is displayed, the brake boost assist motor might be heard operating and you might ...

Balance in ride, handling
With its choice of two powerful engines and strong body-on-frame construction, Rainier carries solid truck credentials. But its silky feel and performance on the road are more akin to a fine touri ...