Help! Can't figure out my problem

I have a 1998 K1500 5.7L Z71 4x4. I have a few problems I need help figuring out. First, my truck will idle normal and then begin to shake off and on. Next, around 40-50 mph when in overdrive my truck will begin to shake. I will accelerate, popping it down to third and about 50+ it will stop. I tried driving in 3rd and noticed a little bit of shaking also. Last problem is when making turns, every now and then my steering will go loose and will make me turn harder than planned. Any help is appreciated. Thanks

Sounds like the EVO sensor on yours too. i just posted on another. it cost about 60.00 and takes about 20 min.

The EVO should fix the steering problem.

thank you. I'll check it out