Silverado owners found a reliability top priority: the 8th VIN digit "E" confirms the 5.3L V8 lacks DFM hardware. This ...
Not everyone likes the driving experience that comes with Dynamic Fuel Management (DFM) or Active Fuel Management (AFM). Some drivers claim turning off cylinders while driving with the goal of ...
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Which GM engines skip AFM?
General Motors’ Active Fuel Management system has been around long enough to earn both fans and vocal critics, and that split has created a simple but urgent question for buyers: which GM engines ...
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