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We have a 2013 CTS with new brakes all the way around. It squeaks like crazy when my wife backs out of the driveway first thing in the morning, then goes away once she drives off. It happens every morning, and it's loud enough for neighbors 3 houses down to hear every time she pulls out of the garage.

I pulled the calipers and pads off, greased all the pads and hosed everything down with brake cleaner. Didn't help at all. I've never heard anything like this. I took it to the dealership and they chalked it up to "the Cadillac brake squeal."

I tried to attach a video, but it won't let me.
 

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Go ahead, blame me. Everybody does 馃檮
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If it wasn't audible before the brake job, it shouldn't be heard now.
Can you isolate it to front/rear or better yet, a specific corner?
Perhaps stand by the car the next time the Mrs. leaves.
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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New brakes - and no such thing as "the Cadillac brake squeal". The installing shop or dealership owes you a correct install job.

I wonder if the pads they used should have had a rubberized sticky backing applied ? Some pads come with a form of rubbery backing to prevent squeaks due to high frequency vibration at slow braking speeds. The reverse only is weird ............

I've done the brakes on 10 or 11 fairly local Cadillacs, using "AC Delco", EBC, Centric, other components and no squeals to date ............


 

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08 CTS DI
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Noise of that intensity only when backing up makes me suspect something is not right with the emergency brake shoe system. I never looked closely partly because I have not had to replace brakes on the car yet, but I suspect it is setup similar to the standard rear drum system with a primary and secondary shoe. When rolling in reverse, the expansion point normally being at the top of the shoes, results in one of the shoes sort of being hooked and dragged outward a bit against the drum. A shoe that is worn out and close to the rivets, or is just noisy by nature usually makes a lot of fuss under that circumstance. This may be the reason nothing you've done so far has improved the situation, especially if semi metallic lining was used for that application, or any of the locations on the car.

One way to test for this would be to apply the emergency brake gradually to see if it makes a difference when the car is rolling back under the ideal conditions to duplicate the noise.

Also, if they resurfaced the rotors on the car, they may not have checked the shoes.
 

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2008 SRX4 & 2010 CTS4 sedan / Non-Cadillacs: 2018 Audi Q5, 2012 Chev Cruze LT
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Mr. Upson might have it. I had to replace the parking brake shoes on mine. The dealership may have just adjusted them too tightly when the new brakes were put on.
 
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