2000 Chevy Blazer uneven grinding noise

What location do you think the grinding noise is coming from. Front end, rear etc?

Does the noise stop when you let your foot off the gas?

After a 20 minute drive at high speeds, CAREFULLY touch your rims on each tire, tap at first so you do not burned. Do any seem extremely hot?

Obviously do not try touching rotors or parts of the tire area, brakes etc.

Does the noise let up on one side when turning? For example. If turning to the right, does the grinding stop on the left?

Does the car stuggle to stay at a certain speed. Like you can get to 60 fine but try to hit 70 and is very difficult to do so.

Getting the general location will be helpful. I am not a mechanic but just picked up a 99 and had many steering and suspension problems. Read about and repaired enough where I think I can help.

I have steered my car back and forth to see if it was a wheel bearing but the noise stayed no matter what way. My wheels are always hot when I get done driving. But not hot enough to burn me. It sounds like its coming from underneath somewhere on the front. Andthe noise stops when I let off the gas and the rpms are below 1500.

It could be your splash shields. The part that covers the rotors. I had a similar problem where they were so rusted in the back it started to twist into the rotor. Mine were so bad it causes the rotor to over heat and warp. Plus I could only hear it at low speeds. It was more of a scraping sound though.

If that is not it or sounds totally off base let me know.

As long as my rpms are below 1500 I cant hear it. No matter how fast im going. And when the transmission is in park and I rev it up past 1500 rpm I cant hear it.

Check your fan blade to be sure it is not hitting the radiator. Also your belts. Starting to think it may be something related to the belts or a wheel the belts go around. Maybe being able to pop the hood while hitting the gas may be helpful.

Did you try joining a blazer forum. There are two good ones. I have the address bookmarked at work but am off for two weeks. I found some good help there. People are really nice and there is a whole section for sounds.

Here's what we think may be wrong with your car and what may be causing it. The list goes from the most likely problem to the least likely. Check out our Product and How To pages or the Vehicle Repair Guide for your vehicle (if available) for more information about particular parts.

Keep in mind, this is a general diagnosis. Your car may not have the parts we list as potential problems. If you're not sure if your car has a particular part, check your owner's manual.

Also on autozone. Com there is free repair info. You have to register a screen name and at the bottom of the screen you will see a repair info link. Then there is a problem solving section where a selection is sounds like. Check a bunch. Howling to one person may be screeching to another.

I will keep brainstorming but may be something I have not

Sounds Like Change
Symptom: Grinding Change
When: Starting Engine Change
Where: Engine Compartment Change

Priority Action Part Type Cause
1 Inspect Starter Drive Faulty Starter Drive.
2 Inspect Starter Starter Motor Faulty.
3 Inspect Starter Shim Improper Flywheel/ Ring Gear Clearance.
4 Inspect Ring Gear (Manual Transmission) Worn, Damaged, or Faulty Ring Gear.
5 Inspect Flywheel (Automatic Transmission) Loose or Improperly TORQUED Flywheel.
6 Inspect Starter Broken or Faulty Wire Connection.