Earlier today, I notice a rear squeaking noise every time when i hit the brakes hard so I took off the rear brake pads and inspected them. They still have plenty of of life left and are OEM factory toyota pads. I grease them up thinking that will fix the problem but it didn't. One thing i also notice is that when I was using my hand to push down on the bumper i can duplicate the squeaking noise again. I have bilstein shocks and extended rear sway bar links that i had on about a year ago. Anyone know the problem? sway bar bushing?