Possible RPO Typo?

[Iowan]

So I wrote down every RPO and have been finding the complete option list for my truck. my truck is a '99 K1500 in I think Pewter Metallic (have no idea if that factual.) Anyway, I have code 11U which is Dark Willow sage green, I know for a fact my truck hasn't been repainted. Also, the interior is a neutral color and the code says it is slate grey? Any ideas? Sorry that the pictures aren't great.

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[5vortec7]

The gm rpo code list I was just using today says dark willow sage met. No mention of green.

https://www.marshu.com/images-websi...codes/gm-firebird-camaro-GM-RPO-car-codes.pdf

 

[89RCLB]

"Through the years some codes have been reused. In one year or make and model, a code might mean one thing, then in another year or for a different make and model it will mean something else. An example is G93. It has been used for a 3.27:1 as well as reportedly a 2.73 Rear Axle ('73 Olds).

Other codes like M21 have been used for both Muncie and Borg Warner close ratio transmissions."

Source: http://www.crankshaftcoalition.com/wiki/RPO_(Regular_Production_Option)_GM_master_list

 

[5vortec7]

"Through the years some codes have been reused. In one year or make and model, a code might mean one thing, then in another year or for a different make and model it will mean something else. An example is G93. It has been used for a 3.27:1 as well as reportedly a 2.73 Rear Axle ('73 Olds).

Other codes like M21 have been used for both Muncie and Borg Warner close ratio transmissions."

Source: http://www.crankshaftcoalition.com/wiki/RPO_(Regular_Production_Option)_GM_master_list

That’s a nice master list!

 

[Iowan]

http://www.rpocodes.com/GM-RPO-codes/gmrpocodes5through9.html this is what I used.

 

[Iowan]

It must have been 11Q, some of them weren't able to be read.

 

[someotherguy]

That’s a nice master list!

That's the same list that has been around for quite a few years in a PDF format. It's the same one that shows MT8 as an 18 speed transmission, while in GMT400 terms it's the first version of the NV4500 5 speed.

Point is, some RPO's definitely get re-purposed over the years.

Paint code 11U on a '99 GMT400 (the "U" means "upper" in the case of a 2-tone scheme; the other color would be suffixed by an "L" for lower) - is indeed pewter metallic, also known as code WA382E

BTW here's a '98 2500 that was in my old shop inventory, also code 11U on the paint (I kept pictures of all SPID labels with the truck pics)

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Richard

 

[df2x4]

As mentioned, lots of RPOs got re-used over the years. You're better off with a dealer VIN lookup or the $5 http://www.compnine.com/ VIN lookup if you want accurate descriptions of the RPOs.

 

[5vortec7]

As mentioned, lots of RPOs got re-used over the years. You're better off with a dealer VIN lookup or the $5 http://www.compnine.com/ VIN lookup if you want accurate descriptions of the RPOs.

I’ve used that a few times in a pinch at junkyards when I couldn’t find the glovebox laying around or the sticker was gone.

 

[Iowan]

As mentioned, lots of RPOs got re-used over the years. You're better off with a dealer VIN lookup or the $5 http://www.compnine.com/ VIN lookup if you want accurate descriptions of the RPOs.

I've been thinking about doing that.