Chevy Silverado 2024 Evap Leak

Chevy Silverado 2024 Evap Leak. A chevy silverado or gmc sierra with a p0449 obdii error code is the ecm seeing a problem with the evap system. Any large leak in your evaporative emission control system, or evap system, can signal trouble code p0455.

The chevy silverado p0442 code indicates a small evaporation system leak, most likely caused by a loose gas cap or a faulty seal. Any large leak in your evaporative emission control system, or evap system, can signal trouble code p0455.