GM to build some pickups, SUVs without start-stop feature

The change will lead to a minor fuel economy reduction in most of the affected vehicles, GM said, and customers will receive a $50 credit on the sticker price for those vehicles. GM Authority reported the change Monday.

Customers will not be able to get the function added later, the automaker said. GM does not expect the adjustment to affect fleetwide corporate average fuel economy (CAFE) compliance.

“We intend to add stop-start back to these vehicles as soon as possible,” spokesman Kevin Kelly told Automotive News.

GM’s fleetwide fuel economy fell to 22.5 mpg in the 2019 model year, down 0.5 mpg from a year earlier, according to the EPA.

Starting with the 2017 model year, the EPA began awarding credits for compliance with federal CAFE standards to automakers whose vehicles had start-stop systems. To meet CAFE requirements, automakers often use credits from earlier years or buy credits from other automakers.

Throughout the microchip shortage, GM has protected full-size pickup and SUV production. Plants that build vehicles in those segments have remained open, while crossover and sedan plants have taken periods of downtime.

In March, GM said it would build some 2021 Silverado and Sierra pickups without active fuel management/dynamic fuel management modules, reducing fuel economy by one mile per gallon. The automaker did not say exactly how much fuel economy would decrease without the automatic stop-start feature, but noted that the impact would be minor.

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