brake problems, any suggestions

[sidwarn]

I have a 98 Yukon. When I apply the brakes there is a hissing noise, I have to keep an excessive amount of pressure to get stopped and when it does stop the engine wants to die. I think it might be the brake booster?

 

[retorq]

I think you are right.

 

[sidwarn]

Thanks. I,ll try it and let you know.