Southeast Diesel Inc

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About Southeast Diesel Inc
Southeast Diesel Inc operates as a diesel engine repair specialist serving Chattanooga and surrounding Tennessee communities. The facility maintains a 4.3-star rating drawn from 50 customer reviews, reflecting consistent service quality across light-duty diesel vehicles, commercial trucks, and heavy equipment. Their service menu covers fuel system diagnostics, injector repair, DEF system maintenance, and routine preventive care for popular diesel platforms including Mitsubishi Fuso, Cummins, Deutz, and Yanmar engines. Operating hours span Monday through Friday from 8 AM to 4:30 PM, providing scheduled appointments for both walk-in inquiries and pre-booked maintenance.
What distinguishes Southeast Diesel from franchise dealerships is their independent specialty focus and direct access to OEM-quality parts without dealer markups. The shop stocks genuine Mitsubishi FUSO components, Deutz diesel parts, and Cummins diesel parts, enabling same-day repairs on common failures rather than waiting for overnight shipments. Their blog content demonstrates technical depth, covering topics like injector failure symptoms, 30K mile oil change intervals for FUSO trucks, and pre-purchase inspection guidance for used diesel trucks. This educational approach helps customers understand equipment care before major expenses arise.
Customer reviews highlight specific technicians who resolved urgent situations. Cody accommodated a cross-country traveler with a Sprinter van emergency, arranging next-morning service. Mike helped multiple customers facing expensive repairs elsewhere, with one reviewer noting he ordered a needed part and had it shipped within hours. Another reviewer mentioned the team declined unnecessary work, recommending against repairs that other shops might have accepted. These scenarios illustrate the diagnostic integrity reviewers consistently praised.
What Customers Say
Seven of seven sampled reviewers awarded five-star ratings, with four explicitly naming individual technicians (Cody, Mike, Kayla). Positive themes across reviews include diagnostic honesty, parts availability, same-day accommodation, and cost savings versus dealerships. No negative reviews appeared in the sampled set.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–4:30 PM |
| Tuesday | 8 AM–4:30 PM |
| Wednesday | 8 AM–4:30 PM |
| ThursdayToday | 8 AM–4:30 PM |
| Friday | 8 AM–4:30 PM |
| Saturday | Closed |
Services
Diesel Fuel Injector Repair
Diagnosis and replacement of failing injectors causing performance loss, smoke, or hard starting in diesel engines.
DEF System Service
Maintenance and repair of Diesel Exhaust Fluid systems in modern diesel trucks, avoiding delete-related complications.
Mitsubishi FUSO Truck Maintenance
Complete 30K mile oil change kits and routine service using OEM-quality parts specific to FUSO trucks.
Cummins & Deutz Parts Supply
In-stock genuine parts for Cummins and Deutz diesel engines, enabling faster repairs.
Pre-Purchase Diesel Inspection
Comprehensive evaluation of used diesel trucks or equipment before purchase to identify hidden issues.
Yanmar Industrial Engine Service
Expert support and parts for Yanmar industrial diesel engines and related equipment.
Tractor Maintenance
Routine service and maintenance for diesel tractors based on over thirty years of experience.
Diesel Fuel Additive Consultation
Technical guidance on whether additives benefit your specific engine, fuel source, and operating conditions.