sorry if its a common question, my 4x4 high and low buttons when pressed in neutral wont flash or anything, the 4x4 wont kick in. but when i click the button a sound by the bottom of the door on the dash area makes a click sound. i know theirs something down their that has to do with it not sure what its called but thats whats going on. any help please of whats wrong or ideas

 

I believe TCC is in the kick panel on the passengers side. I'm not real up on problems with that area of the 4x4 but a search here will produce several threads & checks etc.

 

kinda what i was thinking on that just wanted a few more opinions then just my own though hah

 

What year is your vehicle? Lots of posts on this and I just did work on mine. But for a thorough understanding visit these two links in order:

GMC Sonoma & Chevy S-10 Transfer Case Vacuum Switch

GMC Sonoma & Chevy S-10 Transfer Case Vacuum Switch

 

If you jump one pin on the OBD plug to ground, you can read the 4wd codes. (assuming you have an OBD blazer with the 3 button switch?) The 4wd lights will flash in a sequence and will tell you what codes are stored. There is a good write up on this forum about it.

 

Mine did the same thing. Could here it try to engage when you put it into N. But would not switch over successfully. It would click when in N flash and kick out.

All lights were off on the indicator. Since i didn't want to change the controller and really needed 4x4 fast. I unplugged the battery for a few hours. Reconnected the battery and was good to go. This doesn't fix the problem but may work until you have cash and time to change the module.

From Canada and dont have a garage. Friggin cold out there.