Brake Electric Antilock problems of the 2008 Lexus GX470

2008 Lexus Gx470. S10 appropriate handling- email to the secretary from re Toyota Lexus problems the consumer stated while driving 65 mph he suddenly came upon other vehicles ahead of him. He was able to stop in time, but something misfired in the abs and the vehicle went into a bucking mode. The brakes on the vehicle would seize and then release and the vehicle would coast for 2-3 seconds. The consumer stated his son received a mild whiplash from the severe lurching of the vehicle. The consumer stated he has experienced the seizing and releasing of the brakes on several other occasions. The consumer took the vehicle to the dealer, but they were unable to duplicate the problem.