Got another problem,

98 Blazer, when I try to activate 4HI nothing happens, no light blinking, nothing. If I go to N and try 4LO the case engages but both 4HI and 4LO lights flash and then come on solid. If I go back to 2HI then all is normal again. If I reset the Batt. and then try 4HI it will attempt to go and then fail and get stuck somewhere between the two. I then have to go to N and then to 4LO and then back to 2HI from there. Any Ideas on whether this is the case module or just the button module? I have checked all the vacum diaphrams, vacum lines, and check valves and all seem to be ok. Any help would be greatly appreciated.

Aaron.

Sorry about the late reply bro. I got it fix last week, I ended up taking it to the chevy dealer. They fixed it right away, somehow the switch went bad $650 for the repair. So me driving over a big log had nothing to do with it. It must of happened when I was pushing the swith on and off repetetively. The moral of the story is don't keep switching in and out of 4wd, good luck man.