5 day old 2019 Colorado Z71...first CEL
Had the first error code pop up at 120 miles on my new Colorado. OnStar pulled a diagnostic and provided the following:
P026D The Engine and Transmission System is not performing as expected. An issue has been detected in the Fuel Management System used to maintain, control and monitor fuel consumption. If the check engine light is flashing, a misfire condition has been detected. A misfire increases vehicle emissions and could damage the emission control system on the vehicle. Please reduce vehicle speed, avoid hard accelerations, avoid steep uphill grades, and reduce any cargo loads such as a trailer. If the vehicle is continually driven with the check engine light on, the emission controls might not work as well, the vehicle fuel economy might not be as good, and the engine might not run as smoothly.
Anyone have experience with this?Took it into the dealer Saturday morning to see what they have to say.