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What was the first GM engine to feature cylinder deactivation technology? In theory, it was similar to the L99's Active Fuel Management system of today.
Bonus points if you name the year, make, and model of the car it was first offered in.
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2011 Summit White Camaro 1SS/RS
-6.2 LS3, TR6060, 3.45, G80
2004 Black Silverado 1500 2WD Regular Cab, Short Bed
-5.3 LM7, 4L60E, 3.42, G80
2014 White Caprice PPV
-6.0 L77, 6L80E, 2.92, G80
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