Hello I'm new here and i am having some trouble navigating the site. How to make new threads/post. So I have a question about the truck I am working on. It seems the brakes are locking up because it really struggles to move after coming to a stop sign or after slowing down and then all the sudden its like they let go and the truck launches forward. Any ideas? Any help would be appreciated.

 

Welcome......a couple of ideas...Your calipers may be seizing up....or, there may be debris (clogs) in the brake lines, not allowing the fluid to come back into the master cylinder. This usually happens at the rubber flex hoses going to the wheel cylinders

 

Welcome to Truck Forums.

As Poncho said
Your caliper may need to be service to insure they are sliding freely .
Any 28 yr old handy guy can service them himself
Or your 2005, has it had it scheduled brake fluid flush?

 

I have replaced the rear calipers and the fronts were just done over the summer. The rears were froze. That still didn't fix it. I was told that it could be the pump or booster, is that possible or common?