Yesterday while attempting to back out of a parking spot. My Ls. Just revs while in reverse. I finally got it to. and parked again ten mins later to test it. And it wouldnt reverse at alll. After a twenty minute drive home i parked and attempted to reverse and it worked fine but now i havnt got the car to reverse at all period. The dash board shows im in reverse gear and the reverse lights come on but the car just revs while in that gear. All other gears work fine.. what is the problem with that. Thought maybe trans fluid but ofcourse u cant check it. Because no dip stick. I hope the tranny isnt going because this is my favorite car... i havnt driven the car since getting it home just tested out the gears a couple times