VIN DA95454, my 2000 E38 - 735 started slipping when in D. First the car was jerking when accelerated and now when put in D, have to rev up to 2000rpm for the car to move forward. Reverse is normal. Trany failsafe is on. Believe to have the HP24 trany and looking for a used unit. Believe it will have to be 98 up??? Have gone thru most threads. Will be good to hear all knowledgeable comments. Thanx all in advance. First post.