2002 Yukon 4x4, Deceleration Noise

[mularcher]

I have a 2002 Yukon 4x4, 6” lift. that gets a grinding noise under deceleration. It sounds like a grinding noise you’d hear when the front brakes are totally gone. Thinking the brakes were due and making the noise (20% on pads) I replaced front pads and rotors. The rear brakes were changed two months ago at the dealership. Long story but I lost a caliper bolt causing the caliper to wedge in between the rim and emergency brake cable and locking up the rear wheels.

After changing the front pads and rotors it made no change. I still get the noise more noticeable when braking from 20 mph to 0. I don’t seem to hear it under hard breaking from high speeds. I’ve jacked the truck up and checking wheels for any play which there was none so I think the wheel bearings are ok. I’m at a loss here. This is weird but I think I hear the more when the gas is almost empty could the truck unload under breaking more? Seems I don’t hear the noise as much with a full tank. Could a U-joint or Slip yoke make these sounds is there any way to check?

Thanks for any help I have no clue at this point

 

[mularcher]

After testing at low speeds next to a block wall where I could really hear. This is defiantly a front end grinding noise. I did the 12/6 test on the wheels, Can a bearing be bad without loosening up or make noise when spinning tire by hand? What other bearings in the front end could be making that kind of a noise other than the wheel bearings.

 

[Mac]

Three things pops up in my head...

1.Bad Bearing

2.Differential Problem

3.Brake Caliper sticking (Bleed the system and lube caliper slide pin)

Post a video, maybe that will help too.