abs bleeding

Wondering guys. And what type of system does it have? A delphi7? I'm wondering sincei have intermittent hard pedal leading me to believe I probably have air expanding inside with heat. I changed the master Cylinder about 8 months ago and I never had this issue until I did that swap. I did the typical RR RL FR FL procedure. Help. Is Not the booster hose or valve. I changed it. Not sticky calipers either. I did a full brake job since the pads were low all around and greased all the pins in which were in excellent shape.

Is a 08 vue xe all abs disks.

Here is another hint I noticed. Brakes dragged. I open the good and unplug the booster valve. I hear a healthy vacuum hiss, immediately the car rolls back. So when the vacuum gets removed the brakes let go. Hmmm. Either the booster is the problem or I might be close in my theory of air expanding. What do you guys think?

Thxs for nothing. Lololololol. Since I'm the only player here. I'll update for those who are left with this dead brand. I replaced the rebuild MC and got another rebuilt that was bad out the box. Got a new one and wallaa! Good brake pressure. Car never braked like this before! Unfortunately. .. The new MC has such a good pressure within its Chambers that it made the brake drag 100000 times worse. When the drag came back, it slowly gripped it tighter and tighter. About 4 blocks down the road. .. tight and car go no more. I opened any bleeder and it squirts out and done, the car rolls. But this time I get a c0131 abs code. Pointing to the expensive pump or module. Reading around, looks like it's a gamble even trying to replace the module since it could also be the pump. So I gave it all, the car is worth less by the day sincegm dumped it. So I traded it for a new car. Done deal. Good bye. Good night.