To S10Fan--I think it won't work on yours because I think it has fewer than 17 digits. I found this one--it may work for you.
www.vinwiz.com/
The others tell a few things but are not detailed. Most everything I find is a history report like CarFax.
The CompNine place might work but you have to pay. I'm too cheap.
There is a site I use for Jeeps that will tell you every RPO option on the vehicle.
The site I lost the contact info on would do the same thing for GM vehicles.