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 ...

When General Motors launched Active Fuel Management (AFM) and then, Dynamic Fuel Management (DFM), the idea was that the fuel consumption of truck and SUV owners could be improved by turning off ...

We may receive a commission on purchases made from links. Imagine you could get all the brawny output of a robust V8 engine in your truck when needed, but also get improved fuel efficiency while ...

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.