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 ...

Modes Of Operation
Three selectable modes of operation are available in the Electronic Vehicle Information Center (EVIC). Refer to “Electronic Vehicle Information Center (EVIC)/Personal Settings (Customer-Progra ...

Summer Operation
NOTE: In some cases during high temperature trailer tow operation the Air Conditioning system performance may be reduced. This is to help protect the engine from overheating during the high load ...