Any luck yet?
Another thought I had, since once of your codes is the P2608 codes.... I'd give a main chassis wire harness a good visual inspection, if you haven't already inspected the harness under the van. Especially in the area where is dives down from to the driver's side frame rail. Make sure nothing has smashed the wire harness (rock, etc. or even rodent damage!). It's pretty tight in there, so it's one of the more susceptible places for damage.
If the harness looks fine, next step I'd look at is all connectors. Especially the large bolted connecters where they enter the firewall. The firewall connector could definitely trigger all of those codes, because the trailer tow circuit enter there for the brake controller.
I would not suspect a bad cluster. The windows and stuff could be caused by a failed BCM, but I don't think that would cause the ABS system fault.
Good luck and keep us posted!
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2000 E450 dually V10 wagon
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