First, try a different shop. At a parking lot speed, you would hardly notice warped rotors. At higher speeds, you would feel it much more.
Regardless, it does sound like an ABS problem. Has the ABS light ever come on? Also, you can check the sensors at each wheel to see if the sensors have been damaged, disconnected.
Let me know what you find.
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Tuesday, November 17th, 2009 AT 4:53 PM