GM issues a service update for 2025-2026 GMC Sierra and Savana models to replace the fuel pump power control module, preventing potential engine stalling.
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, ...
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 ...
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