Greg Pace
Newbie
My 96 C1500 brakes shutter intermittently going down hills. No codes or ABS light. Replaced shoes, pads, rotors, drums, calipers, wheel cylinders (all GM new parts) and a rebuilt Kelsey Hayes controller, backing plates and speed sensors. It is 50 % better, buy not good going down a mountain sometimes (not always). I have a great pedal, I replaced the master with a boost cylinder. I'm wondering if the rubber front brake lines could do this, or maybe something else. I have bled the brakes at least 10 times. Anybody have experience with this problem?