just normal automatic except with overdrive button below gear knob this shows on the dash as o/d on or o/d off you should use o/d on for normal driving.the button at the bottom is a shift lock button used to get gears into park if putting your foot on the brake does not work.i had a blown fuse on mine and the brake lights were not working and had to use shift lock till i found the blown fuse problem.ypu should not need to touch the button in normal use.hope this helps you