Well Pirate, it was not as exciting or easy as I would have thought and not real sure I found the real answer. I'm not convinced that I have a Happijac slide out either. When I got to looking at it, there is a single roller on the left side of the slide out. NOTE: My slide out is very short and only slides about 12 inches. There are no visible track on the outside. Looked at sides, top and beneath. So I slid the slide out in and discovered the single roller and no visible tracks in side. Found a little dohicky that has approximately 6 wires going into it and made sure all the wires were secure. There is also a plug in time "breaker" like thing that I pulled out and replaced to make sure it was making good connection. I could not put my eyes on the actual motor that moves the slide.(bummer). Yep, frustrated because I even disassembled the u-shaped dinette partially and realized it was a bigger project than what I could handle tonight. SOOOOO, I lubricated the little roller with some dry lub and sprayed a little on the area it runs on. Also sprayed rubber boot for the slide inside and out. Ran it back and forth without any glitches which was different than the past few times. All that to say, I will be contacting the manufacture to see what more I can do to ensure its proper operation. Will update any info I come up with.
Paul n Donna from Chesapeake, VA
2005 Aerolite 25 RGBSL
2004 GMC Yukon Denali XL