2014 Chevrolet 1500 needs new injectors at low mileage?

chevrolet
silverado1500

#1

2014 Silverado has 47k. Engine light came on with code for cold start/ rough idle. Dealer ran check and said four fuel injectors need replaced. How at such low miles?


#2

May be an issue with the Displacement On Demand system. The system that shuts off 4 cylinders to improve fuel economy. Without knowing which injectors need replacing, it is just speculation on my part.


#3

What was the actual code or codes?