Loss of Digital Speedometer DIC Displays After Manual Regen – 2020-2021 Chevrolet Silverado & GMC Sierra 2500HD/ 3500HD
NHTSA ID Number: 10187775 Manufacturer Communication Number: 21NA012 Summary This technical bulletin provides repair information to correct a customer concern of Clean Exhaust Filter, Perform Manual Regen, and Loss of Digital Speedometer DIC Displays. 4 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 2500 2020-2021 GMC SIERRA 2500 2020-2021 SEOCONTENT-START Service Bulletin Bulletin … Read more