4x4 PROBLEMS SOMETIMES WONT WORK

okay heres the deal, have a 95 chevy blazer, and sometimes the 4x4 wont go into 4 high, or low,it could be a good week till it mess;s up, when i go to switch it to 4high no light at all will turn on, to get the lites to come back on i have to put the car n N then click 4 high or low and bloth lites flash 3 or 4 times then both stay lit, then sometimes i unplug the computer 2 the 4x4 in the dash for a sec it works like brand new again other times i have to let it sit over night to work again....... dont know what to do.....( oh yea and sometimes when drivin down the road with 2 high the lite shuts off and 10 min later comes back on) dont under stand need help lol,,,, thanks guys

Please use the forum search feature and read the other 4x4 problem threads to gain knowledge.

I have a 95 Blazer LT as well and I have the exact same problem. This first happened a year ago and my mechanic replaced the vacuum actuator. The problem appeared again a week later w/ the same problem. The 4hi wouldn't engage and my 4wd lights weren't on. Only 4lo would work. Anyways my mechanic told me to disconnect the battery as to reset the computer and it worked. This problem has happened a number of times over the last year and the battery reset has fixed it. The latest time it didn't work was recently in the middle of a snowstorm! I had to reset the battery for 5 minutes but it worked again. This seems only like a temorary solution though.

Yip, your encoder motor is probably defective.

Was the encoder motor ever replaced? Did it solve your problem?