On this Chevy Venture van, the rear air shocks pumped themselves up while the vehicle was being driven. They are now fully pumped up and won't come back down.
With the ignition on, I can occasionally hear what sounds like a valve start to release air, but then a pump kicks on which, I assume, reinflates the shocks.
I've looked thoroughly on the interior of the van and can't seem to find an air shock release valve (there is an air inflation valve for the pump, but that does not seem to release any air from the shocks).
The weather is very cold (about 0 deg F.) and I'm wondering if perhaps a pressure sensor or something has frozen?
I'm not at all familiar with the system, and I'm hoping someone has experience with this problem and knows what to do to fix it. Is there a diagram somewhere that shows the layout of the system, etc?
Any help would be greatly appreciated!
VHarris