Are you struggling to find reliable general diesel repairs in Tyler, TX? Look no further! At Hex 6 Diesel Services, we specialize in comprehensive diesel repair services, catering to a diverse range of vehicles.
Every hour your truck is down is money out of your pocket. Hex 6 gets your diesel truck diagnosed, repaired, and back on the road fast — from a 36-bay shop in Tyler, TX built to handle everything from a routine oil change to a full engine rebuild. On-highway trucks, semi-trucks, straight trucks, tankers, and commercial vehicles of all types.
Diesel Truck Repair Services
Our technicians handle the full scope of diesel truck repair — no subcontracting, no sending you down the road for specialty work:
- Engine repair, rebuild & overhaul - diesel engine diagnostics, top-end repairs, in-frame and out-of-frame rebuilds, engine conversions
- EGR & DPF service - exhaust gas recirculation and diesel particulate filter cleaning, repair, and replacement
- Transmission & clutch - Eaton Fuller, Allison automatic, manual transmission repair, clutch replacement and adjustment
- Brake system repair - air brake inspection and repair, S-cam and disc brake service, brake chamber and slack adjuster replacement
- Electrical & diagnostics - computerized diagnostics across all major platforms, wiring repair, ABS, sensor replacement, ECM diagnostics
- Fuel system service - injector cleaning and replacement, fuel pump repair, DEF system service
- Cooling system service - radiator repair and replacement, coolant flush, water pump, thermostat service
- Exhaust system repair- muffler, DPF, SCR, and exhaust pipe repair and replacement
- Suspension & steering - front-end alignment, air ride suspension repair, steering gear and component replacement
- Axle & differential repair - axle shaft, differential, and wheel bearing service
- HVAC repair - cab air conditioning diagnostics, refrigerant recharge, heating system repair
- Hydraulic system repair - cylinder, pump, and hose repair and fabrication for hydraulic-equipped trucks
- Preventive maintenance - oil and filter service, fluid checks, belt and hose inspection, pre-trip inspection prep
- DOT inspection & compliance - annual DOT inspections and post-repair re-inspection
- Express lube - fast-turn oil, filter, and fluid services to get you back on the road quickly
- Welding & fabrication - frame repair, fifth wheel repair, custom bracket fabrication, structural welding
Heavy-Duty Diesel Trucks
At Hex 6 Diesel Services, we understand how crucial your on-highway vehicles are to your business, which is why we offer an extensive range of repairs and services for heavy-duty trucks and other on-highway vehicles. Our services include engine diagnostics, transmission repairs, brake services, and much more, all designed to keep your vehicles on the road longer and reduce downtime.
Trucks We Work On
Caterpillar, Chevrolet, Cummins, Detroit, Deutz, Dodge, Ford, Freightliner, GMC, Hino, International, Isuzu, Kenworth, Mack, PACCAR, Peterbilt, Volvo, and more.
Off-Highway Vehicles
Oil and Gas Industry Vehicles
In the demanding oil and gas industry, vehicle reliability is a non-negotiable. Our team at Hex 6 Diesel Services is well-equipped to handle the unique challenges of servicing and repairing oil and gas industry vehicles. We offer specialized services like hydraulic system repairs, engine overhauls, and preventative maintenance, ensuring your fleet is always ready for the harsh demands of the oil field.
Equipment We Work On
Altec, Bobcat, Bomag, Broderson, Caterpillar, CASE, Grove, JLG, Kobelco, Komatsu, Linkbelt, Nissan, Princeton, Riley, and Vermeer, Barko, Geo Boy, Jaraff, and more.
Agricultural Industry Vehicles
Agriculture is the backbone of our community, and at Hex 6 Diesel Services, we pride ourselves on supporting this vital industry. Our extensive services for agricultural industry vehicles include engine repairs, transmission work, and electrical system diagnostics, all tailored to keep your tractors, harvesters, and other farm equipment in peak condition.
Agriculture Equipment We Work on
Branson, Ford, International Harvester, Kubota, Mahindra, New Holland, Massey Ferguson, John Deere, Oliver, Yanmar, Zetor, and more.
Municipal & Government Vehicles
Hex 6 services the full range of municipal and government diesel vehicles — from refuse trucks and utility vehicles to public works equipment and transit fleets. We understand that public fleet operators have compliance requirements, documentation needs, and procurement processes that commercial shops often aren't set up to handle.
As a woman-owned certified business, Hex 6 is a qualified vendor for municipalities, county fleets, school districts, and other government entities that require certified supplier status. We provide:
- Scheduled preventive maintenance programs for public vehicle fleets
- DOT inspection and compliance documentation
- Detailed repair records for government procurement and audit requirements
- Fleet Advantage membership for reduced labor rates and priority service
- Online portal access for fleet managers to track repairs and approve quotes
DOT Inspection & Compliance
For on-highway commercial truck operators, DOT compliance isn't optional. Hex 6 performs annual DOT safety inspections and handles all required repairs to bring your truck into compliance - with the documentation your operation needs.
If your truck has failed an inspection or you're coming up on your annual due date, call us to schedule. We'll inspect, identify any deficiencies, make the necessary repairs, and get you re-inspected and back on the road.
Roadside & Mobile Service
On-highway breakdowns don't wait for business hours. If your truck breaks down between Tyler and its destination, call Hex 6 at (903) 343-9527. Depending on your location and the nature of the failure, we can dispatch a mobile service truck to get you moving again - or advise on the fastest path to our shop.
For fleet operators with equipment that can't be transported, our mobile service trucks also perform scheduled maintenance at your yard or job site.
Heavy-Duty Diesel Vehicle Repair in Tyler, TX
Our commitment at Hex 6 Diesel Services is to provide top-tier general diesel repairs in Tyler, TX. We use the latest diagnostic tools and repair techniques to ensure your heavy-duty diesel vehicles receive the best care possible. With our detailed and technical approach, we guarantee not just repairs but lasting solutions to your diesel vehicle challenges.
Why East Texas Truckers Choose Hex 6
36-bay shop - our facility in Tyler has the capacity to handle multiple trucks simultaneously, with no weeks-long waiting list to get your truck in a bay.
Full-scope repairs - engine rebuilds, EGR/DPF, transmission, brakes, electrical, hydraulics, fabrication. We don't send you down the road for specialty work.
OEM & aftermarket parts - we stock an extensive parts inventory and have established supplier relationships for fast sourcing on parts we don't have on the shelf.
Online repair portal - submit repair requests, track status, review photos, and approve quotes from your phone. No chasing down a service writer for updates.
4.9-star rated - 70+ reviews from East Texas truck operators and fleet managers who rely on us to keep their equipment running.
Fleet maintenance programs - for operators with multiple trucks, our Fleet Advantage program provides reduced labor rates, personalized PM schedules, and priority service.
Family-owned & woman-operated - we've been part of the East Texas community for 20+ years. Your truck isn't a ticket number here.
Frequently Asked Questions
How long does a typical diesel truck repair take?
It depends on the repair. A routine service or minor repair can often be completed same-day or next-day. Major engine work, transmission rebuilds, or complex electrical diagnostics take longer. When you bring your truck in, we'll give you a realistic timeline upfront before any work begins.
Do you work on owner-operator trucks or only fleets?
Both. Whether you're an owner-operator with one truck or a fleet manager with 30, we give every truck the same level of attention. Fleet operators may want to ask about our Fleet Advantage program for reduced labor rates and priority scheduling.
Can you diagnose my truck if I don't know what's wrong?
Yes. We use advanced computerized diagnostic tools across all major truck platforms to identify issues accurately before we start repairing. We'll give you a clear explanation of what we found and a detailed quote before any work begins.
Do you carry parts on-site?
We stock an extensive inventory of OEM and aftermarket parts for the most common diesel truck repairs. For parts we don't have on the shelf, we have supplier relationships that allow us to source most parts quickly to minimize your downtime. You can also browse our parts inventory at hex6parts.com.
Do you perform DOT inspections?
Yes. We perform annual DOT safety inspections for commercial trucks and can handle any required repairs to bring your truck into compliance, with full documentation provided.
Areas We Also Serve For Diesel Repairs in Texas
As well as Tyler, TX, we also proudly bring our diesel repair service to the following surrounding areas, Longview, TX, Kilgore, TX, Jacksonville, TX, Henderson, TX, Athens, TX, Palestine, TX, Sulphur Springs, TX, Marshall, TX, Nacogdoches, TX, Lufkin, TX, Corsicana, TX, Dallas, TX, Plano, TX, Garland, TX, Mesquite, TX, Terrell, TX, Greenville, TX, Mount Pleasant, TX, and Paris, TX.
Get Your Diesel Truck in Today
Whether it's a breakdown, a repair you've been putting off, or you want to set up a maintenance program for your fleet - Hex 6 is ready. Call our Tyler, TX shop, request service online, or submit photos through our repair portal to get a quote before you even bring the truck in.
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