2026 GMC Sierra 5.3L Owner Beats "Stupid" Auto-Stop and Keeps MPG After 1,700-Mile Range Module Test
While some owners report 2026 GMC Sierra issues, Scott Graves found a win. After 1,700 miles and a Range module install to ...
Yup, you read that right: the all-new GM 6.6L V-8 L8T gasoline engine for the all-new 2020 Chevrolet Silverado HD and 2020 GMC Sierra HD is not equipped with Active Fuel Management (AFM), Dynamic Fuel ...
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