AFM Lifter Failure & DOD Delete: What Every GM Truck Owner Needs to Know
If you own a 2007 or newer GM truck or SUV with a 5.3L, 6.0L, or 6.2L V8, there’s a ticking time bomb inside your engine called Active Fuel Management — and there’s a good chance it’s the reason you’re reading this right now. AFM (also called DOD — Displacement on Demand) is GM’s cylinder …
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