Hi, I have a 99 Alero with 105k. just recently the trans appears to be slipping although it just happened out of nowhere. I bought the car used a couple months ago, since then i have replaced alternator, belts, battery, spark plugs and wires and now this issue. The car tends to "slip" after it has been driving for a short while and it does it in all gears. Im hoping there may be something other then the trans causing this. please any suggestions?!?