Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi there, I am Cam. Poor quality fuel may have caused this, but it might be something as simple as your recent driving habits. If you spend any time idling, only went short trips , both would cause it.Considering you only reported the clean exhaust filter, the best bet is exactly what the manual said, go for a 20-30 min drive on the highway. Nothing special, just get to speed and cruise. the system will enter PASSIVE REGENERATION and ideally it will clear this message after 20+ mins driving. Should that fail to clear it, then we might require a shop to put the scanner on and perform a service regeneration.