Good afternoon everyone I am new to this forum I have been asking a specific question to get all the help that I can get I have a 2006 Chevrolet suburban 1500 and the problem with my vehicle is strange and don’t understand and I can’t get the correct answer to fix the problem and get the run around.
after my vehicle sit I start it and drive it the minute the engine and transmission heat up it brakes and stops on its own and will not move again once it has sat for a bit and cools down than it drives again and the same process over and over I have been told it was ecm so I replaced that then it was the hydro boost so it was expensive so I just chance the seals and cleaned it up still the same problem the it was the brake calipers so I changed all 4 along with new brakes and rotors now I’m being told it’s the body control module and that’s expensive which I don’t think it is that is there anyone that has been through this that can give me a real answer that can help me out to solve this problem and help or advise I really would appreciate it.

 

Does the brake pedal get firm and hard to press when this happens?

 

Yes it does

 

There is a thread here somewhere on this same problem. Try the search bar; Iwill see what I can find. If I recall the problem is the master cylinder or hydroboost unit
Read this: https://chevroletforum.com/forum/199...rm+brake+pedal

 

I think similar issues were linked to a brake pushrod with insufficient free play.

 

i looked into that message but the only problem with mine is that its is equipped with a hydro boost that is ran off the power steering pump pressure i don't see a vacuum line to it