Rear grinding sound driver side

Yukon2000xl · Sep 24, 2016

Hello folks ,on my Yukon xl 2000year I'm getting a grinding/metal rubbing sound from rear wheel when I hit a bumps at low speeds (no sound high speeds).Its not all the time but it is frequent and irritating.Ujoints were changed/driveshaft as well.I removed the parking brake pads both sides thinking they were scrapping.Rear brakes almost new,no loose in rear calipers or caliper brackets.No irregular wear on pads and noise is still there when coasting on brakes in an attempt to eliminate noise.
No vibrations ,no high speed sounds and it actually feels like something is clunking around back there once I hit a bump,like I'm jarring it loose ...what ever it is driving me crazy!!!

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Rocket Man · Sep 24, 2016

Could be a bushing in either upper or lower control arms or swaybar/end links.

Chip18 · Sep 24, 2016

Are you sure it's coming from the rear??? On our PT I had a rock trapped against the rotor, I looked and saw nothing but it kept making noise. I finally dropped the Caliper and discovered the problem. No harm in checking the front calipers.

Yukon2000xl · Sep 25, 2016

Chip18 said:
Are you sure it's coming from the rear??? On our PT I had a rock trapped against the rotor, I looked and saw nothing but it kept making noise. I finally dropped the Caliper and discovered the problem. No harm in checking the front calipers.

Seems now that I turn right only the sound of grinding rubbing metal comes from left rear wheel no rocks in all dust shields

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Chip18 · Sep 25, 2016

Hmm ... my grinding issue was a rock stuck between the Caliper and the rotor. You couldn't see it ,I only found it when I unbolted the caliper to see ... whatever???

But in anycase your situation does not seem brake related?? When you turn right it would load the right side and unload the left side. Grinding sound would be metal turning against something and banging would be something loose?? With a Banging sound my first thought would be a loose exhaust mount somewhere??

But that would not explain a "Grinding" sound?? At this point a good call would be to put it up on Jack Stands, remove all the wheels and take a flashlight and just look for sights of rubbing and pull and tug on everything that should be tight??

retiredsparky · Sep 26, 2016

If you are brave, support vehicle on jack-stands, lay under and check each wheel location with a stethoscope when another person runs vehicle slowly in forward gear in 4WD.

Chip18 · Sep 26, 2016

retiredsparky said:
If you are brave, support vehicle on jack-stands, lay under and check each wheel location with a stethoscope when another person runs vehicle slowly in forward gear in 4WD.

LOL that sounds like something I would do ... but not advise I would give.

In anycase I don't think that would help as the conditions would be "static." The issue seems to occur under load???

sumo · Sep 27, 2016

Check your ebrake. I've seen where the shoes came apart and were just bunch of rust and broken bits sitting in the hat

Rocket Man · Sep 27, 2016

sumo said:
Check your ebrake. I've seen where the shoes came apart and were just bunch of rust and broken bits sitting in the hat

He said he removed the parking brake pads on both sides.

sumo · Sep 27, 2016

Red Rocket said:
He said he removed the parking brake pads on both sides.

so he did ha. Can you get a video of it?

Rear grinding sound driver side

Yukon2000xl

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Rocket Man

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Yukon2000xl

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sumo

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