Hi,

I have a 1995 Nissan Patfinder XE 2wd. It has over 163,000 miles on it. Last Thursday I changed out the transmission fluid and the gear oil in the rear differential. It was starting to shift real rough, and the fluid was a nice brown color, so I figured it was time to change it. After the change of the fluid, the truck shifted so much smoother. So I thought all was well. Last Friday night, I noticed that when I shifted the truck in reverse, it didn't move. It just sat there as if it was in nuetral. So I shifted it back into park real quick, and then back into reverse, and this time, movement as usual, so I thought nothing of it. Since then its been doing that off and on, and sometimes it will be in reverse, but not very well. It will hesitate while going into reverse. And finally today, it won't shift into reverse at all. All the other gears, work flawlessly. It's just reverse dose not work. When the truck is in reverse, there is no noise, no movement, not hesitation. Nothing. It acts as though I just shifted into neurtral. Any ideas?

Thank you very much.