Hey Jack, welcome from a fellow noob. Pretty soon now a customer service rep will chime in. If you IM your VIN number to them they will get you the information you need. There are also quite a few members here who can decode the VIN for you and help you out. Unfortunately I am not one of them.
Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
MD Eastern Shore - Kent Island
Re: New member here-
The standard VIN decoder from CompNine is now a paid site. Do some Google work for something like "gm vin decode" or something close. Also, your car may have a RPO (Regular Production Option) sticker full of codes under the spare tire cover. Those can be decoded using online GM RPO sites.
You might want to take a look at a multiple year subscription to www.alldatadiy.com - the GM service manuals plus so much more you need a study course to find all the info - and a subscription has all RPOs, recalls, and TSBs for your car as well as (original) parts pricing and book labor times.