Shifted into four wheel drive. went to shift back in to 2 hi and now the transmisson wont shift

At the risk of going to the offensive, sometimes it's the simplest thing - you ARE putting it in neutral, at a stop, engine running, with the brake pedal pressed, when trying to shift out of 4wd, yes?

2) Check for blown fuse for 4x4 shift module

3)This sounds dumm, but worked on my wife 99. I took it to a school parking lot, put it in reverse, floored it and pulled on the lever and it popped out of 4x4

4) The shift motor is bad. Replace it.

Hope this helps.

when deactivating youre four wheel drive make sure youre rig is in nautral this helps with the gears lining up. whan youre 2-hi light flashes hit a second time. Ive had this problem befor.

You will need to remove the shifter tower (four or five bolts hod it in the transmission.) and look at the parts for wear.

what kind of transmisson is this 4t40or 4t60 or 4t65 or 4L60 ..well most general motor solenoids are located on the the transmisson valve body . which means on a rear wheel drive the transmisson pan needs to be remove to gain access to the valve body . On a front wheel drive the valve body is located under the side cover on the transmisson . Now if i remember rigth there are 3 or 4 control solnoids . 1-2 shift 2-3 shift and a Tcc solnoid . you need to know which one to replace and what location are they on the valve body

if you went to four low then you will need to be engine running with the transmission in neutral, to go back to 2 hi if it is in 4 hi then its not you it is something else because it is a shift on the fly system for two and four hi in any gearrange

I also have a 2002 Envoy. Shifting to and from 4wh and 4wa can be done on the fly but shifting to 4wL has to be done stoped and while in neutral. Try that. Otherwise I'm afraid its a new computer for you. Its located under the left rear seat and you need a loan for one.

if it is electronic there is probably something wrong with the wiring..

but if it is manual...it might be the actuator........

Your blazer is equipped with a shift on the fly four wheel drive. That means that at speeds less than fifteen miles per hour you can shift into or out of four wheel drive by simply pushing the four wheel high button. If you wish to shift into four wheel low. Stop, put the transmission into park or neutral, and push the four wheel low button. Same procedure for shifting back out. Never shift into or out of four wheel low while moving. And be careful in four wheel low. At full throttle your still barely moving, you don't want to blow your engine up!

try putting your truck in neutral and then shifting into 2 wheel drive shift on the fly does not apply to 4 low only 4 high and on electric shift models it wont shift unless your ****** is in neutral.

I had that problem in my 1998 Blazer. There is a module on the passenger side of the truck, next to where the passenger right foot be. Remove the side kick panel to get to module. Disconnect battery before unpluging and pluging new mudule in. This unit controls the electronic switching between 2 and 4 wheel drive..Wes