GMC Brake Pedal kickback

[Tomstruck]

Hello, I have a 2016 GMC Sierra 3500HD Crew cab with right at 22,500 miles on it.

 

About 2,000 miles ago I noticed the brake pedal was kicking back when first pushed, it can be felt under normal braking but is more notable the faster and harder you hit the brakes. I took the truck to the dealer and was informed that the brake booster had gone bad, no problem I got it ordered and had it replaced today by the dealer. I drove to truck home no problem.

 

Latter in the evening I was working on a trailer and as I went to hook the truck to the trailer and got the same kickback as before, but now I can also feel it in the steering wheel.

 

Any idea what the issue could be??? The only modification I have made to the truck are to put a set of light bars in the front and back of the cab, the rest of the truck is stock with original wheels and tires.

[8lugCT]

Sounds like abs is acting up. Maybe one of your front calipers is sticking

[edktm]

Thing shakes the passenger seat pretty good. Just general shaking.. Had new tires installed at my expense, guy says rim bent... let the games begin..

[8lugCT]

My truck shakes at highway speeds. You can see it in the passenger seat