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#1
02-09-2020, 05:18 PM
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Disabling Active Fuel Management on Silverado
I have a 2015 Silverado with the AFM and came across a module you plug into your DLC and disables it. Has any one used one or know if they are worth it. Gas mileage would drop about 3 to 5%, not really worried bout that. If i had more miles i would think about replacing cam and lifters and have it reprogrammed. I have 50k miles on it.
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#2
02-09-2020, 08:40 PM
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I used a Diablosport tuner to electronically disable the AFM on my 2017 5.3 Sierra. I saw zero fuel mileage decrease, and no worries about stuck rings or oil consumption, even though the LT series engines were far better at AFM than the previous gen.
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1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey 1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles 2017 Sierra SLT 1500 Z71 4X4  2019 Canyon SLT Crew 4X4  
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#3
02-10-2020, 03:08 AM
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Is the AFM more of an issue if the vehicle is used the cruise control a lot? I don't have cruise and live in a hilly curvy part of the country .. only rarely do I feel the AFM kick on or off (not sure which it's doing).
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