I have a 03 QC with the 4.7 engine, Question when I apply brakes the front end shakes, when I install new rotors and new brakes it stops. After about 500 miles it starts again. I put some sloted and drilled disk with some good pads and same thing. Does anyboday have any ideas on how to fix.

 

might have a sticky/stuck/damaged cailper
does it also pull to one side during braking?

 

No it stops in a straight line. Does not pull

 

I've gotten a shake a few times too, but otherwise (as in the last 15k miles) it's smooth as glass. Weird ?

 

It's probably your rear rotors that are warped. Pulsating can happen from the rear rotors as well. There was another guy on here that complained about the same thing and I suggested that he should replace the rears because that was likely the culprit. He changed the rears and no more shake.

 

I will try that, replacing the rear rotors and pads, I will let you know what happens

 

Yeah, sounds like typical rotors to me also

 

Let me know how it works out. I have the same year and same problem exactly. Haven't touched the rotors yet. Looking for upgrades