What's the p0454 code Chevy silverado?

When the P0454 Trouble Code appears on Your Chevrolet Silverado, it indicates that there is an issue with the evaporative emission control system pressure sensor intermittent. A visual inspection of EVAP system hoses, lines, electrical harnesses, and connectors is a good place to begin Your diagnosis. Pay particular attention to parts that are routed near sharp edges or hot exhaust components. Dont forget to remove the fuel cap and inspect the seal and screw it back on properly. There will not likely be any noticeable performance difference in the vehicle, and many drivers do not know they have a problem until the Check Engine light comes on.