Hello

I have a problem with 4x4 drive because nothing is shining on the :
even the buttons do not react, nothing has changed.



Or maybe it's broken? if so, can someone help me with this?



while turning the key always heard the sound of the relay on the passenger side and now nothing happens.

Chevrolet blazer 4x4 1999 4.3L v6

thx

 

I would start with a new switch in the dash their not that expensive at most auto parts

 

chexk your tcm fuse

 

Also pull the plugs for the TCCM and see if the connections are corroded. If they are clean them up and add some dielectric grease. If you still have no power at the switch you can try replacing the switch but if your TCCM is original it could be that. I had to replace mine several years ago with the updated version because the originals are crap with a high failure rate.

 

fuse ist ok

 

Connections are corroded :





I have the TCCM orginal.

Where you bought your TCCM in what store? (link)