Front left axle came loose, spilled all the fluid, towed car to trans shop. They replaced inner axle, when I got car back it seemed to start out in 2nd gear and never go into overdrive (4th?) Could it be something is not plugged in? or a sensor? I haven't taken it back but would like to fix it myself if possible. Someone said the trans seems to be in "limp home" mode, something unplugged.