2006 WESTERN ALPINE Power Train Problems

I PURCHASED A 2006 ALPINE AVALANCHE IN SEPTEMBER OF 2007. I HAVE HAD NOTHING BUT PROBLEMS. THE BIGGEST PROBLEM IS THAT THE ALPINE COACH'S USE AN ELECTRONIC MULTIPLEXING MODULE THAT RUNS EVERYTHING ON THE COACH SIDE. IT ALSO AFFECTS THE ENGINE OPERATION, CRUISE CONTROL, BRAKES ETC. ON MAY 4 WE WERE DRIVING FROM BUTTE, MONTANA TO SALT LAKE CITY WHEN THE CRUISE CONTROL WENT OFF, THE ENGINE TURNED OFF AND WE WERE LEFT RIDING DOWN A HILL AT 65 MPH. IF I HAD NOT HAD EXPERIENCE DRIVING TRUCK I DO NOT KNOW WHAT WOULD HAVE HAPPENED. THE MODULE IS MADE BY VANSCO AND IS MODULE 2820. THERE IS A COMPLAINT AND ACTION WITH A RECALL NUMBER FROM WESTERN RV #CSAR-1056. THE PROBLEM IS THAT WESTERN RV IS OUT OF BUSINESS AND VANSCO SAYS THAT THEY CANNOT SELL THE PART BECAUSE IT IS PROPRIETY COMPONENT TO WESTERN RV. THEY ARE CONCERNED...