Joseph Dutton

02 silverado 2500 HD, 6.6 duramax crew cab. 150,000 miles. I'm having an issue when braking at slow speed around 20 mph to stop. Feels like driving on a cobble stone road. Recent work done New pads and rotors all around New front shocks I don't feel any play in the hubs. I don't feel the steering wheel shake when it happens. Trucks drives pretty smooth when at 60. No issue braking at 60. Tires are fairly new. Any ideas to check would be great.