Blazer 4x4 problems?

[dolphinsfan1966]

i just bought a blazer 01 LT 4x4, started having a problem two days ago, i put it in 4 hi and it was fine, then put it in auto 4x4, then tried to go back to 2 hi, and it got stuck and both lights were on the auto 4x4 and 2 hi lights, and of course the service 4x4 light was on, and i had a vibration in the front end when i turned, so i took it into the dealer, he took the terminal off for 15 seconds and put it back on and it reset itself, my dealer said their warranty doesnt cover the 4x4 system. and they didnt service that system before i bought the vehicle, so i bought the transfer case fluid from the gm dealership, and brought it to jiffy lube and had them change the fluid in the front diff and the trasfer case.....then right after that, like an idiot (didnt know til today i wasnt supposed to) i put it in 4 lo in the parking lot on dry pavement.....anyway, i tried to put it back into 2hi or 4hi and nothing happened either 4 hi or 2 hi started blinking and the 4 lo light illuminated back up, so i drove it down the road, dumb idea, but i did it and then parked in another parking lot shut off the engine and started it back up, then pressed the 4 hi button, it went into 4 hi, then pressed 2 hi and it went into 2 hi, so i started going home from there, pressed 4 hi again went in no problem, and 2 hi, no problem, havent tried 4 lo again, i figure i'll only use that if i cant get out of some hole or something, but i havent tried the auto 4x4 again, so i dont know if it'll mess up again......

[05HD]

If you put the transfer case in a bind (by making tight turns on pavement) it may not shift properly or at all. It would be good to have the trouble codes pulled if it acts up again (now that you know how to use it) as it could be several items causing the difficulty.

[RyanbabZ71]

My moms 00 has had 2 problems with the 4wd system. The 1st was an encoder motor (TCC) on the Transfer case. The second time her truck would switch into 4wd by itself 4wd light kept coming on it wouldnt shift out of 4wd well it turned out to be a loose wire for the system in the pass side compartment. Took about 2 wks for the dealership to find it. Luckily they only charged her for the diagnostic fee of like $78 for all the times she went in.