Thanks for the help, I will look into the dump valve.. although for what its worth the truck has been better since the last power bleed. Pedal has only dropped once in the last week or so. So I am still thinkin its air. But if I read that right, its saying replace teh EHCU not the pump itself.. I can get the module rebuilt for $130 at module masters online. Althought I am a bit confused as to why the control module would affect the dump valve...eh I can fill a book with what I dont know I guess. Thaks guys keep the ideas coming