Recently purchased My 08' G6 4cyl for my fiance, it has been running fine although the past week we had issues 1.) The driver side rear door half the time it wont unlock. 2.) The issue started happening yesterday, While driving to work my fiance had the cruise control on (like she always does) but this time halfway to work the Service Traction Control light came on and kicked off the cruise control. She tried to turn the cruise control back on but no luck. After work the same thing she was driving home and Service Traction Control came on and kicked off the cruise control. Has anyone else had this issue? If so what is causing this and how do I go about repairing this? Thank you for reading this and I appreciate any help.