On Demand Diagnostics

If you want get to know your vehicle’s condition in time or there is any failure light flashing, please push down the Blue OnStar Button in time to call OnStar. The customer service advisor will tell you the vehicle’s current condition and the correspondent resolving suggestion. If the failure requires an immediate resolution, or the OnStar customer service advisor cannot make sure the failure type, he or she will help you seek the nearest GM distributor and guide you there.