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 additional driving skills required.

NOTE:
The MDS system may take some time to return to full functionality after a battery disconnect.

    See also:

    Traction Grades
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    Average Fuel Economy / ECO Fuel Saver Mode — If Equipped
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    HSA Activation Criteria
    The following criteria must be met in order for HSA to activate: • Vehicle must be stopped. • Vehicle must be on a 6% (approximate) grade or greater hill. • Gear selection matches vehicle ...