Driving and Operating 8-27The transmission will only allowyou to shift into gears appropriatefor the vehicle speed and engineRevolutions Per Minute (RPM). Thetransmission will not automaticallyshift to the next lower gear if theengine RPM is too high, nor to thenext higher gear when the maximumengine RPM is reached.If shifting is prevented for anyreason, the currently selected gearwill flash multiple times, indicatingthat the transmission has not shiftedgears.While in the DSC mode, thetransmission will automaticallydownshift when the vehicle comesto a stop. This will allow for morepower during take-off.When accelerating the vehicle froma stop in snowy and icy conditions,you may want to shift into secondgear. A higher gear ratio allows youto gain more traction on slipperysurfaces.Fuel Economy ModeThe vehicle may have a fueleconomy mode. When engaged,fuel economy mode can improvethe vehicle's fuel economy.Pressing the eco button by the shiftlever will engage fuel economymode. When activated, the eco lightin the instrument cluster will comeon. See Fuel Economy Light onpage 4‑27. Pressing the button asecond time will turn fuel economymode off.When fuel economy mode is on:. The transmission will upshiftsooner, and downshift later.. The torque converter willlock–up sooner, and stay onlonger.. The gas pedal will be lesssensitive.. The vehicle's computers willmore aggressively shut off fuelto the engine under deceleration.