See also:

Multi-Displacement System (MDS) (If Equipped) — 5.7L Engine Only
This feature offers improved fuel economy by shutting off four of the engine’s eight cylinders during light load and cruise conditions. The system is automatic with no driver inputs or additio ...

To Arm The System
1. Remove the keys from the ignition switch and get out of the vehicle. 2. Lock the door using either the power door lock switch (one door must be open) or the LOCK button on the Remote Keyless ...

To Vary The Speed Setting
While ACC is set, you can increase the set speed by pressing and holding the RES + button. If the button is continually pressed, the set speed will continue to increase in 5 mph (8 km/h) increme ...