Government Fleet Logo
MenuMENU
SearchSEARCH

GM Defense Completes First Production Vehicle for State Department’s Diplomatic Security Service

GM Defense has completed production of the first vehicles in support of the Diplomatic Security Service’s Heavy-Duty armored Sport Utility Vehicle (HD SUV) program.

GM Defense Completes First Production Vehicle for State Department’s Diplomatic Security Service

GM Defense President Steve duMont (left) and Assistant Secretary of State for Diplomatic Security Gentry Smith with the Suburban Shield on display at the GM Defense Manufacturing and Customer Innovation Center Monday, October 28, 2024 in Concord, North Carolina.

Photo: Steve Fecht for GM Defense

2 min to read


GM Defense has completed production of the first vehicles in support of the Diplomatic Security Service’s Heavy-Duty armored Sport Utility Vehicle (HD SUV) program. DSS is the law enforcement and security arm of the U.S. Department of State. 

Milestone Event: Launch of the Suburban Shield

GM marked the milestone event with Assistant Secretary of State for Diplomatic Security Gentry Smith and other key stakeholders at GM Defense’s Concord, North Carolina-based Manufacturing and Customer Innovation Center.

GM Defense’s HD SUV solution, the Suburban Shield, features a new design with a body-on-frame chassis and suspension to support increased vehicle weight and performance requirements. The vehicle includes a high percentage of proven commercial-off-the-shelf parts from General Motors’ global supply chain, including the body, exterior, propulsion, interior, and brakes, for added reliability.

Advanced Design and Manufacturing for Enhanced Security

“Our Suburban Shield significantly enhances the quality, performance, and safety that is essential to the Diplomatic Security Service and provides our nation’s senior diplomats and their supporting teams a vehicle that enables their important mission for diplomacy and national security,” said Steve duMont, GM Defense president.

“I had the opportunity to try out the prototype,” Smith said. “It had good acceleration, handled better in the turns and the heavy-duty anti-lock braking system was far superior to our aftermarket vehicles. You could really feel the stability and performance in the redesigned chassis. The new HD SUV represents a new cost-effective era in the design and building of these badly needed vehicles to help us carry out our mission to ensure the safe and secure conduct of foreign policy in some of our most challenging and dangerous posts.”

GM Defense won the contract to support DSS’ next generation HD SUV last year.  The program is intended to support DSS, in addition to more than a dozen other federal agencies.

More Operations

Women working in technician roles and another woman leading a team.
OperationsMarch 3, 2026

Women in Fleet: Leadership, Innovation, and Industry Evolution

Fleet leadership has moved beyond the shop floor into a role shaped by higher expectations and constant change, and women have helped drive that evolution. But how has that shift happened, and what does effective leadership look like in operations today?

Read More →
image showing several awards with the Government Fleet logo.
Operationsby Nichole OsinskiMarch 3, 2026

Deadline Extended: Government Fleet Awards

Submissions for most awards close Monday, March 9; review award categories, confirm eligibility and requirements, and wrap up your entry before the deadline.

Read More →
SponsoredMarch 1, 2026

3 Ways Fleet Tech Builds Public Trust

Managing a state or local fleet comes with levels of accountability private companies don’t have. Read how modern fleet technology helps elevate visibility and safety to strengthen community trust.

Read More →
Ad Loading...
SponsoredMarch 1, 2026

Modernize Motor Pool Operations Without Increasing Cyber Risk

Still managing your motor pool with spreadsheets and manual approvals? Loyola University replaced outdated processes with automated fleet management, eliminating overtime and saving up to $50,000 annually. See how they did it.

Read More →
Operationsby Staff WriterFebruary 27, 2026

Insight and Advice from Past Winners | The February Dispatch

Revisit a handful of February pieces that still feel relevant, from what top fleet leaders kept consistent over time, to what electrification progress looks like when it’s built on coordination and buy-in, to why associations continue to be a real advantage for public sector fleets.

Read More →
Fleet manager of the year with text 'Leadership Insight.'
Operationsby Staff WriterFebruary 26, 2026

Reflection and Insight from Public Sector Fleet Manger of the Year Winners

This year's Public Sector Fleet Manger of the Year judges relfect on their own industry expereince and share some leadership insights.

Read More →
Ad Loading...
SponsoredFebruary 26, 2026

MOVING ON FROM DEBATE: A Guide for Fleet Managers Who Just Want To Get Electrification Done

Fleet managers are done with the debate—and focused on execution. Learn how to build a practical electrification strategy that aligns infrastructure, operations, and financing while keeping costs controlled and deployment scalable with support from Blink Charging. Discover how smart planning today positions fleets for long-term performance and ROI.

Read More →
Drone-in-a-box docking station with a quadcopter on top, branded SkyfireAI, positioned outdoors on a concrete surface.
Operationsby News/Media ReleaseFebruary 25, 2026

Ohio Advances Nation’s First Statewide Drone First Responder Program with Selection of Nine Public Safety Agencies

Ohio is moving forward with a first-of-its-kind statewide Drone First Responder pilot, giving nine public safety agencies new tools to improve emergency response times and situational awareness.

Read More →
The BBM logo and the Fleetsource logo.
Operationsby Staff WriterFebruary 25, 2026

Bobit Business Media Expands Fleet Technology Platform with Acquisition of Roadz Partner Portfolio

By combining media authority with marketplace enablement, BBM aims to create a more connected environment where fleets can confidently evaluate solutions and technology companies can accelerate responsible growth.

Read More →
Ad Loading...
Operationsby Jeanny RoaFebruary 25, 2026

Electrifying Progress and Building Community: Joseph Mattox's Road to the Public Fleet Hall of Fame

Driven by Community and Sustainability: Mattox’s Approach to Modernizing Municipal Fleet Operations

Read More →