I had a problem with the power sliding side door on my 2001 Grand Caravan. When activated the latch would begin to open and then you'd hear the door power itself close. It would never slide on the track. Like it wasn't getting thrown out far enough to activate the motor that pulled the door back.
I fixed it with a new latching mechanism. It took about 2 hours to replace and about $95. The dealer quoted about $250 - $300 for the repair.
I put up a web page detailing my repair. If you have this problem, you can fix it. Here's how.
http://redhouseon7th.com/howto/2001C...air/index.html
-Mike