1998 blazer 3 button selector last night the 4wd was working great when i got off of work my 4wd button was still lit up but no 4wd everything checks out fine my buttons light up like they should no flashing 4wd service light not on when you go through the selector from 2wd to 4 hi and 4lo in any combination you can hear the transfer case engaging and even the way the blazer drives in 4 hi and 4 lo is all normal except no front wheel drive its almost like my axles are not engaging we just had a mini ice storm and 8-10 inches of snow in the last 4 days so i could really use my 4wd especially since i work 20 mins away does anyone have any ideas also im not sure if its related but now i have a squeeling noise coming from the front passenger tire the whole time im driving at all speeds and if my front diff is the problem who selld a good rebuild kit thanks in advance

 

problem solved

 

I have a '97 blazer with the same prob. What did you find, i'd love to know.

 

Me too! Just had a little snow storm in MN, and suddenly no 4wd. Put it in 4low and and walked around the vehicle and watched both rear wheels spinning in the snow but neither of the front wheels received any power. As if the front drive shaft wasn't there. It hasn't been damaged in any way and worked fine a few weeks ago. The transfer case did humm while driving a few months back, but then stopped and I never thought anything of it. Blazer is a 1997 with 160k on it. Thoughts? Ideas? Anything I should / can check?

 

Try this:

https://blazerforum.com/forum/steeri...ngaging-37658/

Or this:

https://blazerforum.com/forum/tech-a...ill-help-7180/