I have a 06 HSE with 135000. The message center will send out "Suspension
system fault, max 30 mph. When I restart the message goes away for a couple
You probably have an auto leveling suspension or speed sensitive steering and a fault has developed in one of the struts or sensors. Take it to a competent shop and have it fixed. Nothing for the average person to tackle in the back yard.
Ok so Either your compressor for the air ride is going out or your air ride suspension is going out it’s a common issue and cost 8k+ at a dealer. But don’t worry they make normal spring kits for them and will only cost you 2k or so.