Did anyone receive your monthly onstar diagnostic report for this month and received the below error messages? No issues on my dashboard of any problems and nothing is plugged in period. Very odd. Searching on google many people had this same issue back in 2015 and dealers couldn’t find any problems. Is this a onstar issue again??

StabiliTrak® Stability Control System

• We were unable to successfully complete a diagnostic test. This issue may be caused by an aftermarket device plugged into your vehicle's diagnostic port.
• If an indicator light is lit on your dashboard, schedule a service visit with your Dealer soon.

Antilock Braking System

• We were unable to successfully complete a diagnostic test. This issue may be caused by an aftermarket device plugged into your vehicle's diagnostic port.
• If an indicator light is lit on your dashboard, schedule a service visit with your Dealer soon.