"Bump" when stopping and grinding sound when slipping on ice/snow
The vehicle makes a strange bump when stopping (not all the time). It almost feels like another car is bumping into you when you stop. The second problem is in the snow/ice...if the vehicle slips there can be a grinding sound coming from the front tires (either in 2WD or 4WD).
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If you are driving in 4 wheel drive on hard surface then you have drive line torque lock up as there is no centre diff to allow the front and rear wheels to equalise out the torque . 4 wheel drive is for use when on dirt / snow / ice where the differences between the front and back are allowed to slip the tyres . Jack up a rear wheel and allow the torque to dissipate by rotating a wheel . A point from all 4x4 manufacturers is that you NEVER drive in 4 wheel drive unless you are on dirt or ice/snow conditions. You have probably been getting away with it as any bump that lifts a wheel from the road surface will allow the wheel to slip. Even running the tyre on the white painted line on the road or any wet patch on the road will help ease the torque loading
This sounds like the cover plate that's mounted on the side of the disk unit.It's normally fastened with two or three bolts and they do come loose at times. Could also be the actual disk pads that have worn down to metal, which will move away from the disk for a few seconds after hitting a bump.If so, make sure that your disks are not scoured as a result of metal on metal contact, whereby you would have to fit a new disk with the new pads.Check it out. Good luck.
Look at the rear suspension. I think it is one leaf spring upside down over top of the axel. At the ends they are grinding in there seats. Jack the vehicle up by the body clean out the spring seats and oil them a little its just showing its age.
Sounds like your left front wheel bearing is going bad. When you make a right turn, or compress the right front suspension over a bump, it forces the car to roll to the left. This loads the suspension on the left side, which will exaggerate a wheel bearing problem. Are you hearing the noise at all when travelling on the highway in a straight line? If so, it'd be either a grinding sound or a hollow humming noise. If you aren't, it may be that the bearing is just starting to go bad.
A quick test to see if the bearing is bad is to jack the car up at that corner, grab the wheel at the top and bottom, and shake it hard - if there is any movement or looseness, your bearing is shot. If there is none, it doesn't mean the bearing is fine, but it could be that it's just starting to go bad (which would be why you only hear it in turns and bumps, but not straight-line yet).