Chev Suburban Grinding Noise in Front Wheels

Symptom indicates it is something related to the wheels and being of a dry grinding nature, I would say it is something brushing against another.

Test if depressing the brake pedal slightly, not enough pressure to stop vehicle changes the noise level. If noise level changes, check the brake pads and rotor condition. Note if edges of rotor is even or has has protrusion due to wear of inner portion.

Check the brake backing plates. If they are too near the rotor, push tem away with a screwdriver and retest.

I too have been unemployed for over two years. I saved up Advair inhalers and have just one left. When I have to start buying more they will cost me more than I spend each month for food and utilities. There goes my little savings!

Anyway, since no one has come up with an answer yet, I can suggest a different approach for your mechanic. You might even consider doing this yourself. Many auto parts stores borrow or rent tools. Ask for a "Chassis Ear". That is a set of six microphones that are clipped to suspect points under the car, then you use a switch box to switch between them and listen with headphones to find the loudest one. By moving the microphones around, you can zero in on the source of the noise. They work surprisingly well. There is a newer version that has four wireless microphones and two with wires. You have to watch where you run the wires so they don't get caught in the tires while you're driving and turning. I can copy a link to the Mac Tools web site if you want to see what it looks like. It's also available from Matco, Cornwell, and Snapon.

Caradiodoc