Definitely try the pressure bleed. After I pressure bled mine my problem has pretty much gone away. It still happens once in while but I think I need to do one more bleed to get the last bit of air out.I had my brake booster go out. After paying 500 to replace it, I have this problem now. Anybody know what it might be? I got a diagnostic somewhere else and they said it was the module. I just don't know if they tried bleeding the module. Or just said its that.