Wondering if there is a site where one can plug in the vin # and get the
list of what the truck was built with. Until you guys told me what the
cooler lines were I didn't know the truck had both an engine and trans
cooler, I just found out it has a cold package as I just unwrapped the
engine block heater cord etc.
Would love to know other things like which differential it has or whether it
has a locker etc.
Your option list is in the glove compartment. Its a bunch of 3 letter codes
called "rpo" codes. There are lots of sites to look them up. You can take
your vin to a dealer parts desk and they can look up the build sheet.
i went to my local dealer and the service manager ran one free...
it's a "build list" and shows every thing that was included on the
truck when it left the factory.. VERY helpful, when you buy a used
Look at the inside of the glovebox door. There should be a bunch of 3
digit codes printed on a label (known as RPO codes). You can look up
the meanings for them on many different websites, but alot of them are
incomplete and some of them are actually WRONG.
http://www.polariswebdesign.com/gmrpocodes.htm is the best and most
complete list of RPO's that I've found to date.
BTW- You will not be able to find ALL of your codes. There are 8 of
them for my '87 Chevy that aren't listed anywhere. I believe these
codes were used primarily for factory purposes and have no relevant
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