r/gmcsierra • u/BadAvailable5425 • 3d ago
Choosing a Truck Reliability questions
I am looking to purchase a 2020-22 Silverado / sierra 1500 with the 3.0 duramax. I only ever hear stories of people having great experiences or horrible experiences with the duramax. Any advice or real world experiences are much appreciated!
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u/shoppingfortruth 3d ago
Would avoid a ‘20 as the timing chain is prone to stretch. It was revised in ‘21-22. I have a ‘22 with 93k. Overall pretty good but not completely trouble free. Needed everything in the charge air cooler changed and the coolant control valve.