Call Action vans in San Clemente, They have a Fix.
Action Van Suspension
1027 Calle Trepadora, Suite 1
San Clemente, CA 92673
(949) 361-6508 ~~ Toll Free (888) 361-6508
I'm in the process of reconfiguring my van to eliminate the Advancetrac/RSC. Not cheap and it is not a simple weekend project.
In the past I sent several Vans to Action Vans to fix the RSC issue, it was fairly inexpensive, and only took an hour or two.
I'm completely eliminating the system. All of the related components.
What is the issue you're having with RSC anyway? Were the vans all 2wd vans that you took over there?