Thanks for your responses. I have ck'd and greased the sliding pins, the rotors look in in good shape and I am unable to find any numbers on them.
I have test driven with the 20amp ABS fuse removed and everything seems normal. with the fuse replaced the brakes make this grab and release sensation. I cannot remove the ABS controller fuse as it will not shift with that one out. How do I determine is this the (Hydraulic control unit, Proportioning valve or what.
The timing belt,water pump and tensioners were done at 170k