i see, well thanks for the info. I will talk with the mechanic, and find out the scoop on these axels, if indeed they were rebuilt, and by whom, cuz he said he had to send them out to get rebuilt. as far as the " pushing goes" it doesnt push back. its more of a vibration. Since this fourmatic engages only when the rear tires spin, would i still hear a problem with the CV joints if there was one?