Silhouette load levelling compressor keeps coming on

Ignition control module is bad !

when the wipers are off make sure the driver and passenger wipers are at same level on windshield
you can adjust them so they don't go off the edge or hit the bottom.
if they are hitting off the edge and hitting the bottom as well you need to check the linkage since it may be worn out.

follow the top raidator hose where it connetcts to engine that peace it connects to it is under it. usuall two bolts and it comes off and just sets right their ater removeing the houseing you just pull up on it and it comes offf

Check the bleed port on the controller, it may be plugged with dirt. or the controller may have failed. A full funtion scanner would help find the problem.
An other option is to by-pass the auto- leveling system and install a manual scrader valve in the air line, this would allow you to add and remove air with any source. They are availble at most autopart stores.

check coolant level in radiator and coolant bottle sounds like it may be low on coolant

Change your heater core ....will solve problem ...big job ..if your not sure how ..have it done professionally

the egr valve.exhaust gas return.
i would also clean the throttle body

not sure what you are looking for?? there is no fuel cut oof switch in these vans. Not factory anyway. if you could elaborate on what you are looking for and or why.

It is in the front of the top front of the block. Under the Power steering pump.

I had a similar problem. Check your battery, it is probably on the verge of dying. My problem went away when the battery was replaced.