I have a 2007 4 slide nimbus. When I first got the coach a few years ago one of the front slides had this problem. When attempting to retract the slide the process of deflating the bladder and getting a "go" light was taking up to 2 minutes. At that time I remember it being a solenoid issue that was easy to replace. but for the life of me I cannot find that...
Topic: Slow slide retract