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Diagnosing Creaky Brake
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Question
alvocado
My driver's side rear brake on my '11 Yukon is making a creaky noise when activated and I'm out of ideas on the cause. I cleaned and lubricated both guide pins but it didn't help. Both pins slide as expected and don't make noise when moved manually. I pulled the caliper again today and inspected and cleaned the piston. The piston seals look fine with no leaking, bulges, etc. The piston surface cleaned up with brake cleaner and depressed easily prior to removal with a c-clamp. There aren't many moving parts so I'm out of ideas other than the entire caliper may be bad.
Here's a video with the tire off, truck on stands and my son depressing the pedal fully to the floor. It sounds like an old bed spring.
Any ideas are appreciated.
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