The automaker plans to evaluate whether it makes sense to shift production of the heavy-duty Ram pickup from Mexico to Saltillo, Mexico, to Saltillo, Michigan, according to those familiar. The move would be part of a North American vehicle footprint study that would examine whether to alter the automaker’s supply chain and assembly plans for Ram trucks. Ram builds its light-duty Ram 1500s in Michigan and its heavy-duty Ram trucks have historically been assembled in Mexico. An analysis of Ram’s assembly footprint reveals a Stellantis strategy to improve flexibility and supply chain quality, while reducing costs.
Ram’s evolution also provides insight into how influential those production choices have been. While many drivers still link the trucks back to Dodge, Ram was established as its own brand when Chrysler Group split from Dodge in 2009 that way Ram could dedicate its engineering, manufacturing and design facilities exclusively to pickups and commercial vans. Today, that’s Michigan, with Ram trucks made or in development to go electric and range-extended here, and vital parts sourced and produced. Meanwhile, Saltillo continues to be the hub of heavy-duty Ram production and exports around the world.
1. Sterling Heights Assembly Plant and Ram 1500 Production
Ram’s American manufacturing is focused at the Sterling Heights Assembly Plant, or SHAP. Situated in a Detroit suburb, the plant has more than 3 million square feet of manufacturing and warehousing space, and its retooling investment of $1.49 billion was made to prepare for production of the fifth-generation Ram 1500 DT. The plant, which was converted from a car plant to a truck plant in 2018, is now a prominent part of the light-duty pickup lineup, and its employees recently marked the production of the two-millionth Ram 1500 to roll off the line at the Michigan facility.
Sterling Heights Production Milestones:
- More than 3 million square feet
- $1.49 billion retooling investment
- Converted to truck production in 2018
- Two millionth Ram 1500 produced
- Builds the Ram 1500 DT
The two-millionth Ram 1500 milestone also demonstrated how significantly SHAP has changed over the years. Ram brand CEO Tim Kuniskis described the plant as a core part of the manufacturing footprint responsible for assembling the Ram 1500 across 10 trim levels and thousands of configurations. Plant manager Chuck Padden also highlighted the workforce’s resilience, noting that the future of SHAP had once been uncertain. The achievement therefore represents both the scale of current production and the recovery of a facility that has become increasingly important to Ram’s North American operations.
2. Ram’s Brand Separation from Dodge
The Ram name has a long history with Dodge trucks, though nowadays it is marketed as a standalone truck nameplate. It was first used for the 1981 model year on Dodge D-series pickup trucks and B-series vans that were officially known as the Dodge Ram. Dodge had previously used a ram’s-head hood ornament on some trucks back in 1933. In 2009, Chrysler Group spun Ram off from Dodge, allowing the truck brand to focus solely on trucks and commercial vans while Dodge concentrated on performance passenger cars like the Charger and Challenger.
Ram Brand Development:
- Ram name introduced for 1981
- Originally part of Dodge
- Ram became standalone in 2009
- Focus shifted to trucks and vans
- Fifth-generation model debuted in 2018
The separation gave Ram greater freedom to direct its engineering and manufacturing resources toward trucks. Dedicated development teams could concentrate on body-on-frame construction, specialized chassis components, and technologies such as eTorque mild-hybrid systems. The current fifth-generation Ram pickup debuted at the 2018 North American International Auto Show in Detroit for the 2019 model year. Since then, the Ram lineup has continued to build on the brand’s long-running full-size pickup heritage.
3. Michigan Manufacturing Investment and Flexible Production
Stellantis is reinforcing its Michigan manufacturing network through more than $406 million in investments across three major plants. The strategy is designed to create a flexible, multi-energy manufacturing system capable of supporting internal-combustion engines, electric trucks, and range-extended powertrains. Sterling Heights is receiving the largest portion of the investment, with $235.5 million dedicated to preparing the facility for different types of vehicle production. This approach allows multiple powertrain technologies to share the same production environment.
Michigan Investment Highlights:
- More than $406 million overall
- $235.5 million for SHAP
- Supports multiple powertrains
- Includes electric truck production
- Builds regional manufacturing flexibility
The transformation of Sterling Heights demonstrates how Stellantis is adapting its factories to changing vehicle technology. The plant has been retooled to assemble electric vehicles, range-extended models, and traditional internal-combustion trucks on the same production line. This flexibility is important as Ram expands its electrified offerings while continuing to produce conventional trucks. The investment also strengthens Michigan’s role as a manufacturing center capable of handling several different Ram powertrain strategies at the same facility.
4. Ram 1500 REV and Ram charger Manufacturing
The Ram 1500 REV is a key component of Stellantis’ pursuit of electric truck production in Michigan. The 1500 REV is on schedule to be the first entirely electric Ram light-duty truck manufactured in the U.S. and will be based on the STLA Frame architecture. The 1500 REV will be built with a high-strength steel frame that surrounds its battery pack, and an optional 229-kWh battery pack will be capable of at least 500 miles of range. The 1500 REV, which was originally scheduled to lead the pack, was pushed to 2026, with Stellantis shifting the Ram charger launch forward.
Electrified Ram Truck Details:
- Ram 1500 REV uses STLA Frame
- Optional 229 kWh battery
- Up to 500 miles of range
- REV launch delayed to 2026
- Ram charger uses range-extender technology
The 2025 Ram 1500 Ram charger combines electric drive with a range-extender system designed for power and utility. It uses a 92-kWh battery, a 130-kW onboard generator, and 250 kW front and 238 kW rear electric drive modules. The truck produces 663 horsepower and offers up to 14,000 pounds of towing capacity, while its 0-to-60-mph time is listed at four seconds. Its bidirectional charging capability also allows it to send energy to another Stellantis electric vehicle or back toward the grid, expanding its role beyond conventional truck operation.
5. Warren Truck Assembly Plant Strengthens Michigan’s Role
The Warren Truck Assembly Plant completes an important part of the Stellantis manufacturing picture in Michigan. Situated just north of Sterling Heights, this plant has been manufacturing trucks since 1938 and has a history with the Ram brand. Warren used to be famously called the Home of the Ram, which was where the Ram 1500 Classic was produced along with the new Jeep Wagoneer and Grand Wagoneer. The Warren Assembly plant is investing $97.6 million in its plant to build the new electrified Jeep Wagoneer.
Warren Plant Highlights:
- Operating since 1938
- Located near Sterling Heights
- Long history of Ram production
- $97.6 million investment
- Preparing for electrified Wagoneer
The Warren investment shows that Stellantis is not abandoning traditional manufacturing infrastructure as it introduces more electrified vehicles. Instead, the company is adapting established facilities for newer platforms and powertrains. Alongside Sterling Heights, Warren helps maintain a connected manufacturing base in the Detroit area. The continued use of these facilities preserves their historical importance while giving them new responsibilities within Stellantis’ evolving vehicle portfolio.
6. Dundee Engine Plant and Michigan’s Component Network
Manufacturing production area inclusion in Michigan’s manufacturing presence is not just the assembly of completed vehicles. The state has automotive manufacturing investments that cover engine and vehicle assembly and component manufacturing. Most notably, Stellantis announced an investment of $73 million for the manufacture of battery trays at the Dundee Engine Plant to complement its new investment in battery vehicle production in the city. Construction at the site will also include machining parts for a large vehicle platform.
Dundee Manufacturing Role:
- $73 million investment
- Battery tray production
- Supports STLA Frame
- Machines STLA Large components
- Strengthens Michigan supply networks
Powertrain production also remains distributed across North America. The 5.7-liter HEMI V8 is primarily manufactured at the Saltillo Engine Plant in Mexico, while the 3.6-liter Pentastar V6 is often produced at the Trenton Engine Complex in Michigan. Cummins diesel engines used in heavy-duty applications are manufactured by Cummins Inc. in Columbus, Indiana. This network means that even a truck assembled in one country can contain major components produced elsewhere across the region.
7. Saltillo Remains the Heavy-Duty Ram Production Hub
While Michigan handles light-duty Ram production, the Saltillo Truck Assembly Plant in Coahuila, Mexico, remains the primary manufacturing center for Ram’s heavy-duty pickups. The facility has operated since 1995 and is the exclusive producer of heavy-duty models such as the Ram 2500 and Ram 3500. It also builds Ram 4500 and 5500 Chassis Cab models and the Ram 1500 Classic. Saltillo therefore serves an important role in both consumer and commercial truck production.
Saltillo Production Operations:
- Located in Coahuila, Mexico
- Operating since 1995
- Builds Ram 2500 and 3500
- Produces Ram 4500 and 5500
- Exports trucks to 30+ countries
Saltillo has also developed into an important global export center for Ram heavy-duty trucks. The plant has received multiple quality awards within the Stellantis organization and ships heavy-duty vehicles to more than 30 countries. A nearby Saltillo Van Assembly Plant produces the Ram ProMaster cargo van, further expanding Ram’s commercial vehicle manufacturing presence in Mexico. Any decision to move heavy-duty production back to Michigan would therefore affect a facility that currently has a substantial role in Stellantis’ international manufacturing network.
8. Stellantis Previously Considered Moving Heavy-Duty Production
The current feasibility study is not the first time Stellantis has considered relocating heavy-duty Ram production to Michigan. In 2018, plans were announced to move Heavy Duty production to Michigan. Those plans were subsequently cancelled in 2019, with production remaining in Saltillo while U.S. facilities were expanded for other models. The renewed feasibility study therefore revisits a manufacturing strategy that Stellantis has examined before.
Heavy-Duty Production History:
- Michigan relocation considered in 2018
- Plans changed in 2019
- Saltillo retained heavy-duty production
- U.S. plants expanded for other models
- Current feasibility study revisits the idea
The latest review takes place within a manufacturing network that has changed considerably since the earlier proposal. Michigan now has additional investments, flexible production capabilities, and preparations for electric and range-extended Ram trucks. At the same time, Saltillo continues to provide established heavy-duty production capacity and international exports. The potential move would therefore involve evaluating how these existing capabilities could be reorganized rather than simply shifting one assembly operation from one location to another.
9. How Owners Can Identify Their Ram’s Assembly Location
If you have a Ram and you’re wondering where it was built, you can decode your vehicle identification number. The 17-digit vehicle identification number is located on the driver’s side dashboard (there’s usually a small metal plate etched with it) and on the driver’s side door frame. Based on the information provided, the first digit tells you where it was built: 1, 4, or 5 is in the US, 2 means it was built in Canada, and 3 means Mexico. The 11th digit also helps identify the plant.
VIN Assembly Information:
- VIN contains 17 characters
- First character identifies country
- 1, 4, or 5 indicates U.S.
- 3 indicates Mexico
- 11th character identifies plant
For Ram trucks, an “S” in the 11th VIN position typically indicates Sterling Heights Assembly Plant, while “T” represents Warren Truck Assembly Plant and “G” typically represents the Saltillo Truck Assembly Plant. Owners can also check the Federal Safety Certification Label on the driver’s-side door jamb, which can identify whether the vehicle was made in the United States or Mexico along with plant and manufacturing information. A Ram dealership parts department can also use the VIN to generate a Global Build Sheet for more detailed vehicle information.
10. Ram’s Future Under a Multi-Powertrain Strategy
The electrification plans are part of the wider Stellantis’ Dare Forward 2030 strategy, which outlines investments of more than 50 billion ($54 billion) on electrification. The program envisions 100% electric passenger-car sales in Europe and 50% of such sales in the United States by 2030 and total cell capacity of approximately 400 GWh. Among other brands in the wider Dare Forward 2030 drive, Ram is getting ready to offer customers a full line-up of internal-combustion, range-extended and electric powertrains.
Future Ram Manufacturing Focus:
- More than €50 billion electrification plan
- 2030 U.S. EV sales target
- Around 400 GWh battery capacity
- ICE and electric options
- Range-extended powertrains
The possible return of heavy-duty Ram production to Michigan would fit into a manufacturing environment increasingly built around flexibility. Sterling Heights is already prepared for multiple Ram powertrain types, Warren is receiving new investment, and Dundee is supporting future component production. Meanwhile, Saltillo remains an established heavy-duty production and export center. Whether heavy-duty assembly ultimately expands in Michigan or remains in Mexico, the manufacturing network reflects Ram’s long-running focus on pickup trucks, commercial vehicles, and evolving powertrain choices.
