2001 Chevrolet S-10 Blazer 4WD system issues

Maintenance/Repairs
1

4x4 dosent work lite flashes 2 wheel then goes to 4x4 but no go help thank u

2

This is a good introduction to the 4wd setup on a Blazer.

http://www.automotiveforums.com/vbulletin/t572914.html

Check the vacuum lines at the vacuum switch (on firewall). I had to replace the switch on my 2000 Blazer.

Also resetting the TCCM (Transfer Case Control Module) in the right front kick panel might help. Remove kick panel and disconnect the wiring harness for a few seconds.

Ed B.