04-05-2018, 09:37 AM
Brad another area you should check would be the transmission if you haven't already. If you crawl under the coach and listen for air bubbles in the transmission pan. If you do hear that bubbling there should be a normally closed solenoid valve feeding air supply to the modular valve in transmission. If that normally closed valve is letting air thru to the modulator it needs to be replaced. The bubbling isn't very loud so it maybe hard to hear.
Just a thought
when I need a good ear I ask my wife to help cause she can hear my comments when I whisper it 20 feet away. Getting her to do this maybe detrimental to your health cause my wife would beat me up if I asked her to get under the coach. Just sayin!
Jim
Just a thought

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Jim