I just bought a 03 blazer ls 4wd, with 65k on it. Ive been hearing a loud grinding, screeching noise the last 4 days. i replaced the brakes and pads yesterday still have noise. have any idea what it could be?

 

Wheel bearing perhaps? Does it change when you go around corners?

 

Sometimes, but mainly when I'm in stop in go traffic..occasionally at high speed

 

Assuming you don't have a caliper sticking, I'd be suspicious of the wheel bearing too

 

I will check rear disc

 

Jawja, when do you hear the ' loud grinding, screeching noise' ? Only when you apply the brakes ? All the time driving whether you are applying the brakes?

 

Usually in stop and go traffic or coming to allow stop...front brakes and rotors are new...going to dig into rear set this weekend

 

Let us know what you find with the rear brakes. That noise can be serious and shouldn't be ignored. Obviously you aren't. The 'usual suspect' is the wheel bearing hubs. But it could be many other things that cause that esp. with 4WD. It is good to start with the little items that are often ignored. When you check the brakes, be sure to look at the dust shield or splash shield on each wheel. These sheet metal shields are behind the calipers and protect the brakes from water and gravel being thrown up from the road. Sometimes they get bent and then rub against the other brake parts and cause noise. Sometimes gravel gets lodged behind the shield and cause noise. Remove and clean them and inspect for abrasion and bends. This is the time to replace them with the brakes apart. They are not extremely expensive.
Usually the front brake pads last 2 times longer than the rear. On the S10 Blazer this is not always the case. The rear calipers tend to freeze up and then the rear 'emergency brake cables' can freeze up esp. in salt in the winter areas. These two items will cause more wear on the rear brakes. Some on this list recommend replacing the rear calipers as a routine part of a brake job!

 

Thank you Jim...I just realized that the parking brake does not work. I will hopefully get to check it mon or Tues, my work schedule and errands dont give me much free time

 

Do You see any change when You change over in between 2WD and 4WD?