4x4 worked yesterday and before now its gotten really cold and not working ....i'm just wondering if something has iced up in vacuum lines which would cause 4x4 to not work now

 

Do the lights come on when you push the switch? if not look at the fuses first, all of them, then have a look at the switch plug.
I just got mine working today, had to push the plug on the back of the switch

 

all the lights are working on the switch....when i hit a button it just flashes then goes to 2 wheel dr again.....actuator is fine ....i looked at fuses but they were fine is there 1 i could of missed...and where is the switch plug?????
Thanks

 

Go to this forum you'll find help, the one your in sucks, do a search, I did see them talking about what your going through

http://www.automotiveforums.com/vbul...lay.php?f=2072

 

Might try to search the site, ther are some good tech articales in the Do-It-yourself section. Most of them are for common questions/problems.

Try this link
https://blazerforum.com/m_52228/tm.htm

Then check the Do-It-Yourself section for another thread on the electrical end of the 4x4 system.