Does anyone know if there is a way to test my suspension compressor, my truck used to re-level its self, put a new battery in about 5 months ago, other than that its been fine.

 

If it aint broke dont fix

 

^^^^
Great advise!
A credit to this forum[:'(]

A good way to test yor ride level system is to load the rear and listen for the compressor to kick on (key on).
If the rear of the truck is staying level then its working as designed.

 

I loaded the back of my truck up, turned the key on, no compressor sound, truck just dropped low and would'nt come up at all, even after driving a little, load was two medium sized adults (200lbs each)