How do you free stuck brakes on a kenworth truck that's stuck from sitting?

Use a breaker bar with the right size tool (Hex or socket) and use slow, even pressure and the bolt usually comes loose without snapping.

My Saturn had this problem for a while. What was causing it for mine was that the parking brake cables were old and rusty, and when the brake was disengaged, the spring (near the wheel) was not...

Get a brake pad spreader from a local auto parts place. I'm not sure of the exact name, but it is not expensive and the staff should know what your talking about. Once the caliper is loosened from...

squirt w/ wd 40 let soak then try................

Put your foot on the brake and move it into drive