I've got a 2003 H2. I get a loud clunk sound when I first apply the brakes. It only occurs if I'm traveling under 20 mph and go to hit the brakes. And its only when you initially apply the brakes it makes one loud clunk and thats it. When it makes the clunk, I can feel the "clunk" under my feet (from the floor board not from the brake pedal). The noise is pretty loud, almost embarrassing going through the carline at school and drive thru's! It sounds like something is going to just fall off. Any suggestions? Its going back into the service dept on Friday to have it diagnosed but I was hoping to be somewhat educated before going in there.

I had told the dealer about it about a week ago when it was in there to have the starter replaced and the mechanic told me that it was the pads or plates or something like that slipping minutely on the passenger side. He sprayed some white/silvery stuff on the passenger side and sent me on my way. But I'm not sure if I'm buying that, since I can hear and feel it on the drivers side.

And feedback would be greatly appreciated!

 

You said the mechanic said the pads or plates. But what plates are you talking about? and what silvery stuff did he spray?

 

a loose brake pad or missing caliper bolt would cause this , but could be many other causes . you just have to start looking .mike

 

Put some anti seize on your caliper slides......I had this same problem on my Cherokee after driving through a bunch of water.