Re: 2011 Grand Cherokee Hum
On your 2011, drop it from Drive to 5 on the shifter and it will run on eight cyl. If you have a tow/haul button, that will also keep it in eight.
The ECO symbol will come on when you are driving light footed; it will come on even in eight cyl.
Obviously this will affect your mileage. I drive 95% city which gives me 9.5 mpg. All highway driving with cruise control will deliver 19-20 with mountain passes.
2011 LAREDO X Hemi, Offroad Adventure II, QuadraDrive II, Quadra-Lift, Trailer Tow IV, Factory 18" wheel delete, TOYO ATII 245/70/17, Charcoal Pearlcoat, Black Leather, 430N, Single Pane Sunroof http://www.jeepgarage.org/showpost.p...7&postcount=16
2011 TOYOTA TACOMA TRD OFFROAD (wife's) & 1989 TOYOTA DELUXE PICK-UP (had since new)
previous JEEP 2004 LIBERTY Rocky Mountain (R.I.P)