Government Truck Fleet Repair & Maintenance Services in Tyler,TX

When mission readiness matters, your equipment can’t afford downtime. Government agencies and federal contractors rely on heavy-duty trucks, trailers, and equipment to stay operational in demanding environments. At HEX 6 Diesel Services, you get dependable diesel repair and fleet support designed to meet the operational, safety, and compliance standards required for government contracts.

Based in Tyler, Texas, we support municipalities, school districts, public works departments, and federal contractors with responsive service and a reliability-first mindset. From routine maintenance to critical repairs, your fleet stays ready when it matters most.

Comprehensive Fleet Maintenance Capabilities for Government Fleets

HEX 6 Diesel Services delivers full-spectrum heavy-duty maintenance and repair services under one provider. This simplifies vendor management while ensuring consistent service quality across your fleet.

Our government-support capabilities include:

• Heavy-duty diesel engine diagnostics, repairs, and rebuilds
• Transmission, transfer case, and differential service
• Brake systems, suspension, steering, and air systems
• Electrical diagnostics, charging systems, and lighting repairs
• Cooling, heating, and emissions system service
• DOT inspections, preventive maintenance, and compliance support

Preventive maintenance is critical for government fleets operating under strict schedules and budgets. Regular inspections, fluid services, brake evaluations, and drivetrain checks help reduce unexpected failures and extend asset life. Our technicians understand how diesel systems work under load and how small issues can quickly escalate if ignored, especially in high-utilization public service vehicles .

Mobile & On-Site Fleet Services for Operational Efficiency

Many government agencies can’t afford to take vehicles out of service for shop visits. HEX 6 Diesel Services offers mobile and on-site fleet repair options that bring qualified technicians directly to your facility, yard, or job site.

On-site fleet service capabilities include:

• Emergency and priority repairs
• Preventive maintenance programs
• Fleet inspections and service documentation
• Hydraulic hose and cylinder service
• Support for remote or field-based operations

This approach minimizes downtime, reduces logistics challenges, and keeps critical vehicles in service where they’re needed most.

Proven Experience Supporting Public Sector Operations

HEX 6 Diesel Services has a documented history supporting public-sector and community-based fleets. Past performance includes repairs for school transportation vehicles, municipal utility equipment, agricultural operations, and mixed on-highway and off-highway fleets.

Our diesel mechanic team are experienced with equipment from manufacturers such as Kenworth, Freightliner, Mack, Ford, CAT, John Deere, and Komatsu. This broad expertise allows us to support diverse fleets without the learning curve delays that can impact uptime .

Contract-Ready & Compliance-Focused

HEX 6 Diesel Services operates under applicable NAICS codes, including general automotive repair, transmission repair, and commercial and industrial maintenance. We understand the importance of documentation, safety standards, and accountability in government contracting environments.

If your agency or contracting team is seeking a responsive, capable diesel service provider that prioritizes uptime and mission success, HEX 6 Diesel Services is ready to support your operation.

Fully Stocked Parts Inventory

Benefit from our fully stocked, on-site inventory, eliminating lengthy wait times you may find at other shops while they source components. We have both OEM and aftermarket parts, so regardless of your budget, you can get everything you need. All parts are rigorously inspected to ensure that even aftermarket options are of the highest quality possible.

Contact Us Today To Discuss Contracting Opportunities & Fleet Support Solutions