GM is recalling a long list of models for an issue with the fuel pump power control module that can interrupt the flow of fuel to the engine. Many are Chevy models, including the Blazer, Camaro, ...

General Motors has issued a new service update targeting a potential fault with the fuel pump power control module in certain 2025-2026 model year vehicles, including the GMC Sierra and GMC Savana.

Answer:No, and yes. GM's Active Fuel Management, as with all cylinder deactivation systems, does improve fuel economy. But the amount of fuel savings between V-8 and V-4 mode is somewhat of a gray ...