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GM’S Active Fuel Management: Camshaft and Valve Lifter Failures

GM’S Active Fuel Management: Camshaft and Valve Lifter Failures

April 23, 2019

GM’s Active Fuel Management (AFM) system allows a V8 engine to turn off half of its cylinders for fuel economy purposes. In doing so the V8 engines RPO: L76, L77, L83, L86, L94, L99, LC9, LFA, LH6, LMG, LS4, LT1, LT4, LY5 and LV3 are developing a history of camshafts and valve lifters being turned […]

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