I have a 2011 Cadillac Escalade ESV. My local dealer replaced the air ride compressor 10 months ago and last month it went out again. When they replaced the second compressor it would not shut off. They tried to trace the problem down, but no resolution. The mechanic indicated that there were three configurations for my car. The GM techs could only find wiring specs or technical configurations for the other two and not my configuration. Any thoughts on where I go to help them find them? My VIN is 1GYS4HEF8BR######.