I have a 99 Blazer Lt with a blown motor and bought a 98 Sport utility with a rebuilt motor. Can I convert it so it has automatic 4 wheel drive? what would I all need to take off of the LT to do it? I wouldn't mind taking the whole interior and swapping it over because my Lt has heated electric leather seats and I've swapped entire interiors before. I'm Assuming I'd have to swap out the dash wiring harness and possibly the transfer case and its wiring harness and then possibly the rest of the interior wiring harness to get the heated seats to work? Any help would be greatly appreciated I haven't worked on these in a while so I'm a little out of practice. Thanks in advance!

 

It would probably be a lot easier to put the good engine in the 99.

 

My body is all rotted and this one is in much better shape plus i have no garage or cherry picker or thats what i would do. Plus where I live is all sand so a cherry picker would just tip over.
Ill use it like it is for the winter itd be a summer project.

 

For the swap from a 3 button system to the Autotrac 4 button system to work you'd need to swap the transfer case, the TCCM (Transfer Case Control Module), the switch, and the probably at least some of the harness. Not sure if you'd need to swap or reprogram the ECU as well. As far as the harness goes, you'd need to compare the harness at the switch, the TCCM, and the transfer case to see what differences there are on it.

It's an interesting swap. I've occasionally wished I had the Autotrac system in my truck when my wife drives it, but never enough to dive deep into researching the project.

 

Very interested in this. Hopefully there is success, let us know what you come up with... would be amazing with my zr2 setup under my 4 door