I was having problems with the two slides on my Fleetwood MH. Sometimes they would not go out and sometimes they wouldn't come in; totally dead, no response to the rocker switches. I had to go down in the electrical bay and jiggle the 6-lead cable plugged into the Power-Gear control boards for the slides. Turns out the problem was not a loose cable, but cold solder joints on the under side of the cards. Removed both cards, re-soldered, reinstalled, now works fine. I did purchase a replacement card to keep on hand , just in case.
2003 Fleetwood Discovery 38U