Definitly wouldn't be master cylinder, booster or lines, but the rubber brake hoses do sometimes collapse and may be causing your brakes to not release all the way, either that or calipers [/QUOTE]

 

Yup. Bad calipers wont cause pulsing. It has to be the rotors! Even tho you just replaced them they could have easily gone bad again. I bet they are still covered under warranty...

 

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If you look at who I was referring to it was the OP who had a problem with his inner pads wearing rapidly, that would be caused by calipers. Your brakes pulsating is not caused by calipers but if it makes you feel better buy some new ones and then when they still pulsate try changin the rotors.

 

the calipers rotors and driver side rubber brake hose are all less than three months old. the pads about two months old and the outters are GONE, the inners are new. its like they are not pushing in even or something. i've bled them out and everything.

 

It's gotta be the calipers or slides, don't see what else it could be, are you sure the pads are sittin in there right so thety will slide on the pins.

 

i'll replace the calipers, pads, and try to get some ss brake hoses that outta fix it up, right after i figure out my power steering problem thanks tire man!

 

My truck had same problem but it was the rear brakes.. turns out the seals went in the axle and leaked oil all over the shoes and drums and caused the truck to violently shake when brakes were applied. could be same problem in the front end too @Killstroker

 

The support for what the caliper bolts to and pads sit in needs to be taken off and cleaned up with a cutting wheel ( that's what we use ) to get the contact point when the pad actually sits and rides clean of rust and back down to bare metal. Then reinstall new pads ( should sit fairely loose in the brace ) problem solved.