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RPO Codes: One oddball in my list

11668 Views 11 Replies 7 Participants Last post by  BornAgainBiker55
This question may be posted somewhere around, but I didn't see it in my searches:
A few days ago I was watching a video linked from here regarding the G80 RPO Code indicating the Eaton Locking Rear Differential. I got curious and started looking up all my RPO Codes for fun. I've got a 2007 Silverado 1500. All my RPO codes seemed right / fine with the exception of "1LT". I have no idea what this one is, and I've only seen it noted on Malibu codes as the LT-I trim package. I've checked the sticker, it's not a wrong note on my end that I can see. I still have the original window sticker, and it's an LT-II Package on there.

Anyone have any ideas on the "1LT" RPO Code? If not, it's no big deal, I was just wanting a complete list for fun.

I'm using these two sites for my lookups:

Thanks all!
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Technically, since your truck is the LT2 pacakge, you have to thave the LT1 before you get to the LT2 package. As in, the LT1 has everything the LT2 has plus whatever extra options make it an LT2. Hence, they put both codes on the sticker. I have nothing to base this on; I'm just thinking out loud.
The link Pikey provided is a nice one but be sure to copy/past like he said, the first time you use it. As far as I can tell, if you try to use it again, it wants you to pay for the info and won't show you anything until you do.
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