Re: Slide moving on its own…
Reply #5 –
On my coach it's in the bay that contains the HWH compressor. I thought mine was the check valve, too, but slide creep of greater than 1" usually indites the solenoid. Mine creeped about 1" over the course of a month or two in storage to the point where I couldn't get the transmission engaged either. You could always start with the check valve and go from there. Good luck.