Stellantis Pauses Warren Truck Production Over Engine Shortage

Stellantis will pause production at its Warren Truck Assembly Plant starting April 14, 2025, due to a shortage of twin-turbocharged 3.0-liter HURRICANE I6 engines. The temporary shutdown, which will impact the Jeep® Wagoneer and Grand Wagoneer SUVs built at the facility, is expected to last several weeks, with production resuming in early May.

The issue isn’t related to recent tariffs or international trade decisions but rather a supply crunch with the 3.0-liter HURRICANE I6 engine built at Stellantis’ Saltillo North Engine Plant in Mexico. According to Stellantis spokesperson Jodi Tinson, the company is prioritizing engine allocations for Ram 1500 pickups at the Sterling Heights Assembly Plant, which continues to see strong demand.

“Due to an internal shortage of engines, Stellantis is allocating all available volume to support production of the Ram 1500 at the Sterling Heights Assembly Plant,” Tinson said in a statement.

United Auto Workers (UAW) Local 140 President Eric Graham told The Detroit News that the engine supply issues began before President Donald Trump implemented new tariffs. Graham expects the production pause at Warren Truck to last around four weeks and estimates that over 1,000 workers will be temporarily laid off as a result.

The plant already operates with a single shift and has been experiencing soft demand for the Wagoneer and Grand Wagoneer lineup. Workers have recently seen shorter weeks and reduced schedules, even before this latest engine-related shutdown. However, a few hundred workers assigned to repair Ram 1500 trucks will remain on the job in a separate part of the plant.

Adding to the challenges at Warren Truck, approximately 1,300 workers remain on indefinite layoff following the discontinuation of the Ram 1500 Classic last fall. UAW leadership has continued to advocate for bringing more Ram 1500 production back to the plant to offset those losses.

Kevin Gotinsky, who leads the UAW’s Stellantis department, says Warren Truck is a top candidate to receive additional product allocations if Stellantis shifts more vehicle production back to the U.S. in response to tariffs.

“We built the Ram truck there before,” Gotinsky said. “The plant has [the] capacity to add two more shifts on. It’s an easy one to get launched back there.”

Even so, Graham remains cautious about holding out hope. “Everyone’s hoping that with the tariffs, that the overflow of the (Ram 1500) that they make at Sterling Heights will come to Warren Truck,” he told The Detroit News. “But there’s no guarantee of that.”

As of now, Warren Truck remains in a holding pattern, caught between engine shortages and broader questions about Stellantis’ long-term production strategy in the U.S.