2022 GMC Sierra 1500
Mileage
55,817
Service Date
6/13/2025
Services Performed
- Verified check engine light on, pulled code P2C7A nitrogen oxides catalytic converter 2 efficiency below threshold invalid configuration. Found TSB applicable to code; recommend updating ECM, performing nitrogen oxide reset NOx sensor reset, and performing nitrogen oxide catalytic converter reductant loading reset NOx catalyst reductant loading reset. Road tested truck, truck operating normally, no concerns felt during road test. Inspected truck, everything checks ok.
Brian S. gave our service a 5 star review on 6/13/2025
