1999 Blazer front end noise

Power steering pump maybe? Is it roaring, or loud grinding/whining? I'd check Power Steering Pump.

Quite often it is a bad wheel bearing, a lot of chevy's are notorious for them. A wheel bearing will usually create a growling type noise that is more prominent at around 40-60MPH. If its a wheel bearing you should notice a change in pitch when turning in one direction, for example if you have a bad right side wheel bearing it will be noisy driving straight ahead, then get louder when turning LEFT. If you turn right the noise softens. The weight distribution of the front end will be greater on the right side when turning left. Of course the works in the opposite direction. If the noise remains constant going straight and turning it could be a bad tire. Visually check the tire for pressure and bulges in the side wall. You didn't mention what type or model vehicle you have, because in some cases the rear wheel bearing could be causing the noise.

you may have a bad clutch in your radiator fan

this is caused by a defective wheel bearing, they can get really loud, any front end shop will road test this foree and give you an estimate to repair, I urge you to have this checked ASAP as uit can cause the wheel to break off the hub if the bearing freezes up.

You have a front wheel bearing that is making noise. Usually the one that is the problem is louder when turning in the opposite direction. If you turn right and noise gets loud then its your left bearing and if you turn left and the noise gets loud then its your right bearing. Understand that thats just a rule of thumb and that either bearing can make noise in either direction. Good luck!

If your noise is a low pitch rumble that gets louder the faster you go, it likely is a wheel bearing that is the cause. Another sign that the noise is from a wheel bearing is if the noise tends to get louder when steering one direction at a steady speed, and quieter when steering the other direction. A transmission noise does not change with the steering.

if the front brake pads,rotor and more importantly the caliper were all installed correctly, this noise is probably a front hub bearing that is failing. they will start a humming noise and then a roaring/growling noise the worse they get. is the noise rotational? by that it will get louder and higher in pitch as you increase the vehicle speed. get it checked out right away to avoid possible further damage.

Does the noise change pitch when you weave the steering wheel back and forth. Possible front wheel bearing.

sounds like a wheel bearing. typically when you take weight off bad bearing noise goes away. to replace bearing you will need a press to get it off and on

jack up front of car get hold of tyre an see if u get any play if u do u may get away with nipping them up a bit