This is a cool way to check your VIN #

[CJ]

Compnine total vin decoder
The CompNine Total VIN Decoder includes Chevrolet, Saturn, GMC, Hummer, Cadillac, Buick, Pontiac, Oldsmobile, Geo, Dodge, Plymouth, Jeep, Chrysler, Ford, Lincoln, Mercury, Mazda Trucks, and Mercedes.
We have over 240 Million VINs in our database, going back to 1980 and up to early 2010. Ford, Lincoln, Mercury, and Mazda Truck matches are from 1992 to early 2009.
Our Total VIN Decoder is a service we provide for dealerships, salvage yards, insurance companies, and businesses that need detailed, precise information about a specific vehicle.

Comprehensive Chevrolet, Saturn, GMC, Hummer, Cadillac, Buick, Oldsmobile, Pontiac, Geo, Dodge, Plymouth, Jeep, Chrysler, Ford, Lincoln, Mercury, Mazda Truck, Mercedes VIN Decoder

[Flassh]

I think this site was reviewed in another thread some time back.

Neat information, but for some reason, it doubles the number of vehicles.

For example, it says there are 5618 2006 SSRs, but total build was 2809.

It's a comprehensive list of options and equipment, but not sure it it's totally accurate.

I plugged in my 06 2-tone. System comes back with 2 trucks with the same option combination. If the numbers are doubles, does that mean my truck does not have an identical twin anywhere?

[Cash]

Yes, we visited this at length.
It is an interesting site for sure but there are a number of errors in their RPO descriptions, quite a few "unknowns", '03 & '06 numbers doubled, '04 & '05 quadrupled. I would not rely on any build date information provided. Some of their numbers do not compute although some are extremely interesting. The problem for the average person is you don't know which ones to trust.
I use the site extensively for a couple reasons:
1. With the assistance of others I have run hundreds of build sheets trying to track various SSR's as well as focus on select groups. It is a tedious VIN seeking mission that I could not begin to ask people like Marc to be involved in.
2. I have viewed so many build sheets that I can easily spot their mistakes and also can fill in most of their unknowns. It takes me about 10 minutes to edit every build sheet to make corrections.
If you want accurate information go through the "Build Sheet Request" thread. If you don't care so much about accuracy and if 90% is okay, then this is a fun site.
There are many "one ofs" that I come across, and I'm not too sure about the accuracy of that although I wouldn't discount the fact it could be so.
Flassh, I can definitely see yours being a one of - The combination of Z49 1SC VYJ 96P M10 67U 41L U19 is not likely to be duplicated. In fact, I just looked at the "FPR's By The Numbers" thread and can tell from it that yours is the only one.
Most times the "one ofs" will be determined because it may not have the logo carpets or it will have one of the Sales Control Item "R" codes, or varied emissions information, usually trivial stuff.

[CJ]

i did
i just found this and wondered
LOL
i just did it as a fyi
have no clue or claim as to how good it is