88-94 to 95-98 All Swap Info Compile

[gr8twhite]

Originally Posted by someotherguy

gr8white - there's a rag joint in all of the OBS shafts at the bottom where it goes to the gearbox. It's covered by that plastic shroud. The 3500HD is the only one I've seen with the U-joint instead.

On the interior trim, if you start trying to mix-and-match portions so that you can keep the 3rd door trim but use your other older trim, you'll start finding all the "gotchas." First one is that the colors are different shades between the old and new interior styles. Second is that a lot of the pieces won't mix, like old A-pillars won't fit the new dash, up to '95 B-pillars just have a single hole instead of a slot for adjustable shoulder belts, stuff like that.


Richard

Thanks again for the heads up Richard.

Colors aren't really important, the interior is all going to be redone.

Items like the dash and a pillar trim aren't going to be a factor as the entire 89 interior will move over except for the third door area plastic.

The seat belt adjustability may be a bit of a problem, I may just use the later model B pillar trims and go with the adjustable belts.

It will be a project that will take some time, parts swapping, fabbing and head scratching that's for sure.

But I'm up for it.

=)

[billyrb]

I see that most folks are doing this with 88-94 pickups....I have a 1991 GMC Suburban that I'd like to drop in a 1995-1998 dash & door panels into. Has anyone done this, and if so, what are the differences? I know the outside door shells are different, but are there differences on the interior mounting locations?

[NorCal_z71]

Originally Posted by billyrb

I see that most folks are doing this with 88-94 pickups....I have a 1991 GMC Suburban that I'd like to drop in a 1995-1998 dash & door panels into. Has anyone done this, and if so, what are the differences? I know the outside door shells are different, but are there differences on the interior mounting locations?

unless you are talking about a very very late year model 1991 and it is the 92-1999 body style (like all 88-98 trucks, 92-99 tahoes/yukons, etc) then it is effectively "impossible". is it doable in a classic body (73-91) suburban/truck, yes, but its going to be a ridiculous amount of custom work equal to basically doing a custom dash. the wiring will be the least of your worries. the door panels will be next to impossible if not impossible. there is no "swap" involved, they are 100% completely different vehicles

[billyrb]

that's kinda what I was thinking, but hadn't seen any confirmation. Might as well start searching for an Excursion to drop my duramax into then ;)

[DeanDalton]

Has anybody been able to get wiring diagrams from All-Data?

When I did this swap I found books and wiring diagrams relatively easy to find for the pre 1995 trucks, but impossible to find for the 1995 and up trucks. I may have cracked a code on some of the diagrams. You will still need to figure out how to make the two trucks one though. I can't help you there except to say carefully read this forum.

Anyway, just thought I's throw that out there.

Dean