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  1. 2020+ LM2 Duramax Powertrain
    Bought new and has 37,000 miles on it now. Week before Christmas ck engine light came on and called the dealership right away. Couldn't get me in till following week. Truck was running fine and checked all fluid levels. My son has a code reader and said it was glow plug on Cylinder 2. Called...
  2. 911 Problems Forum
    This is my second Silverado 1500 with the 3.0 Duramax. First one was a 2020 and the truck was awesome and never ever had any problems. I traded it at 65,000 miles for a 2021, the 2021 has problems. At random distances I am getting "Service DEF System" and the truck starts slowing itself down...
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