4 wheel drive problem and front suspension

I have a 1987 Chevrolet S-10 Blazer 4x4 and I took it out 4 wheel'n and after I got done and was on my way home the steering felt wierd like there was a lot of play and then it was fine it did that all the way home and when I pulled out on the main road I had a hard time controling it and the front end was bounceing from side to side and there was also like a grinding noise so I got it home and lifted the drivers side with a jack and normally you would be able to free spin the front wheel well it would not spin the calipers are fine and the rotors and brake pads are new I then had a friend turn the wheel and it would not turn all the way and it was hard to turn yes the car was not running but the turn radius is not right going either way. What could be the problem could the half shafts make it bounce and make it hard to control? Nothing looks like it is broke it is all solid and no play. Today I put it in 4 hi and drove it backwards for a few feet then put it in 2 wheel drive and the light went out as normal and I had my steering back but there was still a sound comeing from bolth sides and I put it back in 4 hi and it got worse again what can be the problem if anyone can help could it be the steering gear box or the cv half shafts or the hubs it will turn by had for about a 1/2 turn then stops that is when I had it up in the air on the drivers side only though. Thanks for reading all of this and hope that you can help thanks you again for your time