More info on the Dealer’s repair pursuant to SB N212353840 which states all 16 lifters must be replaced. After connecting with the Dealer’s General Manager (GM), the Service Manager went back to the ...
General Motors's Active Fuel Management (AFM) technology utilizes hydraulic valves, solenoids, and advanced software to shut down half of the cylinders in a V8 or V6 engine to save fuel. The system ...
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Which GM engines skip AFM? Here’s the list
Shoppers who care about long-term reliability increasingly want to know which General Motors engines avoid Active Fuel Management, the cylinder deactivation system that has drawn scrutiny from some ...
Here is where my Sub lifter repairs stand now: The dealer GM and SM met with GM representatives. GM authorized warranty repair to replace all 16 lifters. This is the second replacement of all lifters.
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