In case someone wants to change the serpentine belt on these vans, it is very easy to do. It took me about a hour to do but I can probably do it in about 30 minutes now. This is without jacking up the van at all.
Here are the steps...
Turn your wheels to the farthest right.
Crawl under the van (if you're thin like me, you do not need to raise it).
Remove the plastic splash shield underneath the belt. (1 screw, 3 plastic clippings)
Locate the tensioner pulley and you will notice a "slot" to the end of it.
Apply a 19mm wrench into that "slot" and turn counterclockwise. (that's pushing the wrench up if you're underneath)
This loosen up the slack and you can use your other hand to slip the old belt off. This only took a few minutes to do.
The hard part is getting the new belt back on since it's tighter and new. Follow diagram on the body and route the belt back on. You should leave the crankshaft pulley last since it doesn't move.
Now...push on that 19mm wrench on the tensioner pulley all the way up as far as possible. Before doing this, it's best to get a buddy to help you slip the belt back in. Get him setup by sitting next to the right front wheel. By turning the wheel to the farthest right, he should have enough space to reach in and help you slip the belt back to the pulley.