Left front brake grabbing and vibration at times. gets hot and smokes

Your brake rotors are warped and need to either be shaved or replaced.

Year, make and model of your vehicle would help. Do you have any codes in your ABS control module ?

I had a very similar problem in my 93 town car. I ended up changing the Calipers, rotors, and pads. This stopped the grabbing, but still every once and a while the ABS light would come on and grip the brakes on me. I ended up pulling the ABS relay from under the hood.and the problem has stayed away. The only thing is that now i dont ABS brakes. Its a heavy car tho and i havent had an issue yet. Also, if you decide to do this, the relay way mis marked in my car, when i pulled the ABS relay, the Air shocks went out instead. Had to pull one at a time until the anti lock light came on, then i knew i had it.

sticking brake caliper on passenger side.look for a lot of brake dust on wheel, if more than other side you know this is the prob

Check front end steering linkages for any play, as well as rear brakes for sticking or grabbing as well. Not unusual for a rear brake grabbing, to cause front end to want to wander.

Yes they do and they work independantly of each other. Each wheel has it's own axle and hub coming from the transmission mounted underneath the motor. If the car is pulling to the right you need to check the brakes and make sure they are not grabbing. Front wheels usually have disc brakes and the calipers tend to bind up and grab over time, this will cause the car to pull to the right. You might also have an alignment issue and that can cuase the car to pull, even a low tire will cause this. The floating issue is probably due to a worn strut and it is not doing its job as a shock absorber. When your replaced the hub did you also replace the axle? The axles must also match up to each other. The car could also be pulling to the right because you replaced the left hub and it now is turning with less friction than the right. You should go ahead and replace the right and check the brakes for any grabbing or worn rotor. Once this is done get an alignment and this should resolve the pulling issue.

every problem has an answer. overhaul ur front brakes. but a 2009 should be under warrenty.

sounds like spindle/axle may be bent!

It is more than likely in the hub bearing assembly. The easiest way to check it is to jack up that side of the vehicle and grab the wheel on the top and bottom and see if it moves back and forth with some slack. Should not have any slack.

I would suggest that you adjust your rear brakes. Most likely you have drum brakes in the rear. When the rear brakes are out of adjustment (caused by not using "e-brake" when you park the car. The "e-brake" when applied keeps the rear brakes adjusted with a self adjusting mechanism.) the front brakes have to do ALL of the work to stop the car. In this case going down a steep grade for a long time simply overheated the front brakes. When the front brake pads overheat they get "glazed" and don't want to work anymore. Most likely reason for brake pedal going to the floor is the brake fluid was boiling. Hope this helps. Good luck.