Forgive me here, Bob, for any ignorance on my part which kept me from responding sooner. Are you talking about the air system, as per your thread title, or the slideout hydraulic solenoids passenger side near the front steps? Both are HWH systems. Not familiar with the term "six pack", other than my ale supply (more like a 12-18 pack these days) but not particularly in reference to my abs of late (one six pack does not begat the other
).
If its the hydraulics, I think I once saw something online, at HWH or elsewhere, directing a solenoid rebuild.
Joel