My 2003 Chevy Avalanche is making a weird squeaky squealin noise not sure where that is but also it is overheating what could be the cause of that

SOURCE: i hit a bump on

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).

SOURCE: 2003 Hyundai Accent Rear Brake Noise

the rear shoes need to be cleaned and adjusted. nothing to worry about unless it annoys you too much.

SOURCE: dry squeaky grinding noise 2003 explorer

That's where I'd go first. check with driveline unloaded (neutral with wheels off the ground.)

SOURCE: 2003 CHEVY AVALANCHE dash board telling me left

check the lil switch that'll be located on the latch anchor point or within a few inches of it.... odd is the switch is faulty

SOURCE: Where is oil sending unit on 2003 Chevy Avalanche

It's at the very back of the block, top-center, under the intake manifold.