I have a 246 not a 236. Thank you for the link and write up. The Tahoe brake switch is different than the Astro or s10 but could be wired the same. I just cant confirm it. I cant find a clear wire diagram some BS web page keeps blocking and redirecting me to their "free" site.gavio said:Yes, it did.... I don't have the 233 any more (I switched to a 231), but back when I installed the electronic shift, I did a writeup, and it talks about that very thing...For your Tcase to go into 4low does the trans need to be put into Neutral?
I'm pretty sure you need to do the exact same thing to hook up the 236
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