Squeaky brake question
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Instructor
Joined: Dec 2007
Posts: 138
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Squeaky brake question
Changed the pads on my 07 Z-51. The reason was due to the dust. The new ceramic delco pads squealed like a banshee with partial pedal. Tried everything on the forum, brake burn in, lube, etc. Got so annoying, I pulled the pads.
The one thing I did notice was the forward mounting ears on the pads showed minor rusting on the corners. Obviously, the pads were oscillating or vibrating in the caliper. Enough that it wore the paint off riding in the aluminum abutment brackets. This happened on both front calipers, but, was much more pronounced on the passenger side.
Has anyone seen this before? Is there anyway to stop this vibration? I can't live with the squeaking it is so bad. Any help? Thanks.
The one thing I did notice was the forward mounting ears on the pads showed minor rusting on the corners. Obviously, the pads were oscillating or vibrating in the caliper. Enough that it wore the paint off riding in the aluminum abutment brackets. This happened on both front calipers, but, was much more pronounced on the passenger side.
Has anyone seen this before? Is there anyway to stop this vibration? I can't live with the squeaking it is so bad. Any help? Thanks.
Burning Brakes
Joined: Nov 2010
Posts: 1,043
Likes: 17
From: Western Kentucky
This won't answer your question about vibration but may address your squealing concern. My guess is that you didn't turn your rotors when you changed the pads. This left old brake pad material inbedded in the disc's. Your brakes would squeal until all this old material is gone.
When I changed the pads in my GS over to ceramic I had the same issue at first. With the low mileage I had I didn't bother to turn the rotors. They didn't squeal all the time but usually at very light pedal pressure. No squeal with firm or hard pressure. Often when coming to a slow stop.
I did the bedding process a couple of times, thought the noise had gone only to have it return as low pressure and slow speeds. Little by little the noise went away. The only thing that changed is the old brake pad material either wore off or was covered over by the material from the new pads. I'm glad I stuck it out because the one piece GS pads are not inexpensive and there isn't a big market for USED brake pads.
When I changed the pads in my GS over to ceramic I had the same issue at first. With the low mileage I had I didn't bother to turn the rotors. They didn't squeal all the time but usually at very light pedal pressure. No squeal with firm or hard pressure. Often when coming to a slow stop.
I did the bedding process a couple of times, thought the noise had gone only to have it return as low pressure and slow speeds. Little by little the noise went away. The only thing that changed is the old brake pad material either wore off or was covered over by the material from the new pads. I'm glad I stuck it out because the one piece GS pads are not inexpensive and there isn't a big market for USED brake pads.
