Stellantis recently announced a $24.7 million investment in its engine plant in Trenton, Michigan.

The Trenton plant is responsible for manufacturing the 3.6-liter naturally aspirated Pentastar V6, which will receive an upgrade next year. This particular powertrain has been a massive hit for the Stellantis group; by February 2019, 10 million units had been made.

Stellantis' Trenton plant consists of two production facilities. The South Plant will be upgraded to build old and updated versions of the Pentastar V6. There is no official word on the upgrade, but since the factory needs retooling, adding hybrid or plug-in hybrid components is the most likely scenario.

It's not all good news, however. Stellantis also announced that the North Plant would be shut down by the end of 2022. According to Stellantis, it will be used as a warehouse for storing. It might even be part of Stellantis' plan to make EVs cheaper before the electric vehicle industry collapses.

Shutting a production line down means job cuts, though Stellantis has not yet revealed how many career opportunities would be affected. The Trenton plant currently employs 1,322 people, and a significant chunk of these people are likely facing the chopping block.

There is light at the end of the tunnel. Stellantis is retooling its Kokomo facility in Indiana, and it recently announced a $2.5 billion investment in a US-based EV battery plant.

In addition to the above, Stellantis is also investing in an EV Dodge and a possible Chrysler 300 EV successor.

Stellantis is likely in talks with unions to move workers to other positions, which could include a spot at any of the above.

According to Stellantis, the upgraded Pentastar V6 will be introduced by the end of the first quarter in 2023, though the current version will be produced until the end of 2023. The Pentastar is currently the standard engine in Chrysler, Jeep, Dodge, and Ram models.