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Which GM engines skip AFM?

General Motors’ Active Fuel Management system has been around long enough to earn both fans and vocal critics, and that split has created a simple but urgent question for buyers: which GM engines ...
GM Authority

GM Engine Valve Lifter Lawsuit Plaintiffs Denied Motion To Sever By Judge

CarComplaints reports that a federal judge just handed GM a significant procedural win in the long-running engine lifter class action, denying the plaintiffs’ motion to sever the case into two ...

TOPDON USA’s AFM Disabler Enhances Drivability, Reduces Risk of Engine Damage for GM Vehicles with AFM, DFM Systems

TOPDON USA's AFM Disabler works with many GM vehicles powered by V6 and V8 engines with Active Fuel Management (AFM) or ...
TopSpeed

GM Fixes Ticketing Lifters By Making V8 Burn More Fuel

Peter earned a Bachelor of Archeology and Creative Writing from the University of Alabama and has since joined his love of driving and riding with storytelling. His voice is full of southern ...
GM Authority

GM 6.2L V8 L87 Engine Never Had This Fuel-Saving Feature Constraint

As a result of production constraints and logistics issues stemming from the COVID-19 pandemic, GM decided to remove certain features from a number of its production vehicles. One of the most notable ...
autoevolution

NHTSA Opens New Probe Into Faulty GM L87 Small-Block V8 Engines

Back in January 2025, the National Highway Traffic Safety Administration's Office of Defects Investigation opened a preliminary evaluation into the L87 small-block V8 that powers a variety of General ...
Torque News

Silverado Oil Consumption Part 2: Disabling DFM and the 5W-30 Viscosity Solution

Stop your Silverado's rapid oil loss with this practical guide. Fleet data show that disabling DFM cylinder cutoffs and ...
Autoblog

What’s Wrong With GM’s V8?: Teardown Exposes Shocking Engine Damage

The American automaker’s ubiquitous small-block L87 V8 isn’t having the best year so far. General Motors began 2025 facing a major issue: the National Highway Traffic Safety Administration (NHTSA) ...