RPO code help

[heffalump]

Soooo... I ran the RPO codes on my blazer and I got a question or three..
I found out it came factory with the HD towing package.. what all came in this package? I know sway bars and trailer lights but what else? Also what is a special option package 15?

There are a few more I'm wondering about also but can't remember them off the top of my head... I'll post them up when I get back to a computer...

 

[RetroC10Sport]

RPO Z82 included VR4 hitch; UY7 wiring; V02 trans oil cooler and w/o the diesel, it also includes KC4 engine oil cooler.

I'm not entirely sure what is included in special packages. I'm trying to figure all that out but haven't gotten very far.

Here's more info for your consideration.
http://www.gmheritagecenter.com/doc...rmation-kits/Blazer/1990-Chevrolet-Blazer.pdf

 

[chengny]

The details are as below - if you can read it:

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[RacingTurtles]

Some good information. I feel like I've seen this in a brochure somewhere too. I found this thread because i was looking for the same

This thread is about the KC4 oil cooler.

KC4 - Stock Oil Cooler Info w/ pictures - Third Generation F-Body Message Boards Tech / General Engine - KC4 - Stock Oil Cooler Info w/ pictures - I had a hard time finding information about the stock oil cooler on my car on this site, on any site, in any Haynes/Chilton manual, anywhere. So here's a short blurb about what I found out when changing my seal. The oil cooler is... www.thirdgen.org

Here's another good site with a wealth of information.

1990 Chevy and GMC Literature and Sales Brochures

1990 Chevy GMC Literature and Sales Brochures including Suburban

1990suburban.com