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 someotherguy
Moderator
Posts: 23375
Age: 43
Loc: Texas
Reg: 08-01-03
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10-25-10 09:49 AM - Post#1994704
I spent some time this morning to come up with what I hope is an all-inclusive VIN decoding card for our GMT400 trucks. This info came from many sources - LMC 1988-1998 truck catalog, LMC 1992-1999 Blazer/Tahoe catalog, LMC 1992-1999 Suburban catalog, an uncredited site on angelfire Canada, GM's dealerworld site, and research using a collection of VIN's from my former salvage yard inventory.
Several sites have most of the info, but I couldn't find one that had all of it in one spot.
Please feel free to post/share it wherever you like. I prefer you use my direct link to post it, so as I make corrections, the new version will automatically replace the previous one. If you find any errors or omissions please let me know in an email (address is at bottom of the document) and I'll check it out and correct as needed.
If your browser or the forum software automatically resizes the image you may need to go to the direct link below and use the function in your browser to view the image full screen...or just print it out as a reference.
Direct link: http://www.someotherplace.com/info/GMT400VINCARD.J...
Richard
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355Cheyenne
Senior Member
Posts: 3743
Loc: Northern MN
Reg: 10-27-04
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 10-25-10 10:10 AM - Post#1994722
In response to someotherguy
VERY NICE. 
| 98 Silverado k1500 4x4 350 |
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Smither
Member
Posts: 321
Loc: Central Illinois
Reg: 12-26-02
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10-25-10 11:14 AM - Post#1994748
In response to someotherguy
Richard, you are the man. Thank you!
'94 C1500
'04 Crew Cab
'95 C1500 Suburban |
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rodram
Contributor
Posts: 372
Loc: Saskatoon, CANADA
Reg: 04-14-09
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10-25-10 12:22 PM - Post#1994772
In response to Smither
thank you for this ... I have been curious about this information for my truck, but never took the initiative to look myself...
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someotherguy
Moderator
Posts: 23375
Age: 43
Loc: Texas
Reg: 08-01-03
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10-25-10 12:48 PM - Post#1994778
In response to rodram
Another neat thing is getting all your RPO codes - you can punch your VIN into this site:
http://www.compnine.com/vid.php
If it has your records on file, it will show you every RPO code your vehicle was made with and the description of the code. Not everything is there but I've had pretty good luck with it.
Richard
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someotherguy
Moderator
Posts: 23375
Age: 43
Loc: Texas
Reg: 08-01-03
|
10-31-11 07:24 AM - Post#2152978
In response to someotherguy
Now that Compnine has sadly gone offline, a useful resource is gone. You can still perform the RPO decoding yourself, IF your SPID label (service parts identification) is still legible inside your glovebox, and it's the one original to your vehicle (check the last digits of the VIN against your dash tag.) Here's a post I just put up in the newer truck section regarding this info:
Decoding the VIN isn't that big of a deal; the information is out there. What Compnine was great for was returning to you all the RPO codes unique to your vehicle, and giving the description of each RPO. You can still do this...manually...if you have access to your RPO codes.
On the 88-98 fullsize trucks, the RPO codes are on a sticker inside the glovebox. I suspect they're in the same place or similar on the newer trucks. I strongly suggest you take a clear, close-up, digital picture of your sticker and save a copy of it on your computer for future reference, in case anything ever happens to it. On the 88-94 trucks many of them are illegible now because GM in their wisdom placed it on the floor of the glovebox; stuff rubbing on them over the years have scratched them badly.
Here is a link straight to GM with a lot of VIN decoding cards, particularly for the later model vehicles: http://service.gm.com/dealerworld/vincards/
For the 88-98 trucks I have compiled data from many different sources and made my own VIN decoding card: http://www.someotherplace.com/info/GMT400VINCARD.J...
This can tell you what country your truck was made in, manufacturing division, GVWR (gross vehicle weight rating), chassis type (2wd, 4wd), series (1/2 ton, 3/4 ton, etc.), body type, engine type, model year, and manufacturing plant.
You can decode your RPO list from your glovebox sticker by using one of the many collections of RPO codes found around the internet. These sites come and go over the years; I found one really complete reference and have hosted it on my site in hopes I can provide it in the event its other sources go away: http://www.someotherplace.com/info/RPO.pdf
Keep in mind that sometimes a particular RPO code can be recycled so it may not always mean the same thing from year to year, or model to model. For example, MT8 in this list indicates an 18 speed manual transmission (heavy truck) but on early 90's light trucks is actually the NV4500 5 speed. So, no list is 100% correct but this one will get you most of the way.
Richard
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