Hey guys,
Great forum. Very informative. I'm a new guy with a 92 GMC Jimmy, 4.3 ltr V, 4x4 push button
Ive researched through all of the threads and cant seem to find any suggestions to my specific problem. SO, here it goes:

The 4x4 selector button (both gren and yellow) lights up when the key is first turned. From there, nothing. No flashing idicatrs, No click behind the glove box, nothing under the battery box...nothing. Ive tested the switch, and pulled the TCCM and opened it up and everything looks new. Any suggestions as to what my problem might be?

 

A writeup by me and swartlkk with a DIY repair attempt as a quick fix to get it going, general technical description about DTC's associated with the TCCM and from swartlkk schematics and manual pages. About all you are looking for I think:

https://blazerforum.com/forum/tech-a...-switch-29170/


A general description I wrote as reply to transfer case general functions find the last thread on page 4:

https://blazerforum.com/forum/1st-ge...e-75024/page4/