Well my certified warranty ended back in April and today I get my first message on my DIC. "Service Suspension Sys". Oh boy! nothing like scaring the S#@T out of me. One of the most expensive areas to repair. Anyways, on the way home, another message displayed stating that my top speed is now limited to 90 mph! So with the help of this site I ran the diagnostics and it returned a C0584 code as current. It did show a C0852 as History???. In any case, I do have the complete set of GM repa