Whats up with my brakes ????!!!!!!

[zipgun]

I have a 1990 V1500 4x4 Burb with 124,000 miles on it. It has a developed a weird shudder in the front brakes when it has been driven awhile - aprroximately 20 minutes. I have replaced the brake hoses, pads. The rotors dont look warped and arent gouged. Has anybody else experienced this? I can drive it for the first 20 minutes and it stops fine but after that it shudders and bounces a bit. I have bled the brakes as per the manual and am sure there is no air in the lines. I am stumped at this point.

ANY SUGGESTIONS ?

Thanks,

zipgun

[tom71]

does it shudder all the time or only when the brakes are applied

[zipgun]

During the first twenty minutes of use they dont shudder at all, then at every application of the brakes thereafter it does the shakes. I am stumped ! Driving me nuts.

[tom71]

i would check wheel bearings and steering linkage just to cover the bases , but i think its the rotors

[zipgun]

I am going to pull the drivers side tire today and take another look see at the rotor. Do you think it might be a bad proportioning valve or metering valve? I have never dealt with a bad valve. This burb does have ABS but I am not sure if that would be making the problem.

Thanks for the reply Tom

zipgun

[zipgun]

Got it fixed!!! I replaced the rotors and the wheel bearings and races, so I am ok for now, Thanks !!!!!!!!!!!!!!!!!!!!

zipgun