This is my first Ezcalade EXT. It's a 2010 with only 87,000 kilometers (53k miles). I bought in a different province so I had to get an etensive inspection done. All four struts were leaking so I had to replace them (ouch). The mechanic also found that the electrics were unplugged from the air system at the back. He cleaned it up and plugged it all back in. He then found that the Service Suspension Light came on. Previous owner must have found that unplugging the system was his fix. Has anyone seen this and what was the cause. I am guessing a wheel senson but Cadillac is new to me.