Chevy Silverado 2024 Evap Leak. If you see a p0442 evaporative emission system leak detected code, you may be able to resolve the problem without much effort. The p0455 code is a result of a large leak in an evaporative emissions control system (evap).
The easiest solution may be to remove and reaffix the gas cap. The purpose of that system is to keep the fuel fumes inside the fume lines.