GMC Sierra owner Jacob Van Den Top reports lifter failure on his 6.2L V8, challenging GM’s claims that the valvetrain issues were resolved for 2026. Is a DFM disabler now mandatory for new truck ...
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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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