electronic shift-on-the-fly esof standard on xlt supercrew ... 4.2l o o engine power rack-and-pinion steering limited slip rear axle axle upgrade see ... dealer for details ssosooosoossoosooosoooss oooo ... trailer tow package required for towing over 5,000 lbs includes class ... and upgraded auxiliary transmission oil cooler requires o o 4.6l or 5.4l triton ... ® v8 aux trans oil cooler only with 4.2l v6 a/t snow plow prep ... package includes 4,300-lb maximum front o spring/gawr note restrictions apply ... see your dealer for more information heavy-duty payload ... package increases gvwr to 8,200 lbs for improved payload and towing ... restrictions apply see dealer for details includes lt245/70x17d bsw all- ... radiator and auxiliary o transmission oil cooler 10.25 gear set standard 4.10 ...