It's worth checking the electrical connections at the solenoids for corrosion or fraying. With access to the area, I'd also have a helper attempt to deploy the front-jack and simultaneously give the front-jack solenoid a whack with with a hammer.
WRT what to do when this jack is not working, it's just up to you to do an air dump or not to bother air dumping.
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Robi & Dale ---- Go Navy ----
2016 Winnie TOUR 42'
Tow: '19 Buick Envision
or: '08 Buick Lucerne
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