DETROIT — Fiat Chrysler is moving production of heavy-duty trucks from Mexico to Michigan and paying bonuses to US workers in response to the passage of US tax reform late last year.

The automaker will invest $1 billion in its Warren Truck Assembly Plant to make the Ram Heavy Duty Truck starting in 2020. That truck is currently made in Saltillo, Mexico, where workers will continue to make commercial vehicles.

FCA says the Warren plant will add 2,500 new jobs.

The company also plans to pay $2,000 bonuses this spring to about 60,000 hourly and salaried US employees. Senior executives won’t get the bonus.

FCA CEO Sergio Marchionne says the company should adjust its manufacturing footprint to reflect “improvement in the US business environment.” He says employees should also share in the tax savings.