Air Lift LoadLifter 5000 Ultimate and 72000 Wireless Controller / Compressor 07-13 Chevy GMC

The FAIL code was due to me missing/skipping the JOIN step. Temporarily ground the yellow wire on the harness, set the controller in JOIN mode and the system takes care of the rest. The compressor doesn't kick on then off anymore like heard in the video, the compressor is now on solid until the demanded PSI.
The air bags look canted in the video because the back tires are in the garage and the front are on the driveway about 8" to 10" lower.
The system has been used to haul a 30' toy hauler with perfect results. It brought the truck back up to ride height within one minute.
I measured the height from the bottom of the trailer hitch to the ground. For my truck that is 20.5" with no load. Attach your trailer or after you load the pickup bed, measure that distance and increase the air bags until stock height is reached.