
Diesel Engine Repair in Manatee & Sarasota Counties
Diesel Engine Repair for Trucks, Fleets, and Heavy Equipment
Gulf Coast Power provides in-shop and on-site diesel engine repair for trucks, fleets, and heavy equipment across Palmetto, Bradenton, Sarasota, and the surrounding Gulf Coast.
Diesel Engine Repair When Downtime Isn't an Option
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Authorized Cummins and Onan dealer
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ASE certified diesel mechanic
A diesel engine works harder than almost any other piece of equipment you own, whether it's pulling loads up I-75, running a delivery route through downtown Bradenton, or powering equipment at a Port Manatee job site. That kind of use eventually catches up with injectors, turbochargers, cooling systems, and internal components. When a diesel engine starts losing power, smoking, or throwing codes, our team diagnoses the real problem and fixes it right the first time.
Gulf Coast Power has been the diesel engine mechanic Manatee and Sarasota County businesses call since 1999. We handle everything from routine diesel engine service to full teardown and rebuild, backed by ASE certification and Cummins factory training.
Whether your truck needs a diagnostic scan or your fleet needs a full engine overhaul, we treat every job with the urgency your operation demands. Our shop in Palmetto and our mobile trucks cover the full region so your equipment gets back to work fast.
What Our Diesel Truck Repair Team Handles
Our technicians work on everything from single work trucks to full commercial fleets, and every repair starts with an accurate diagnosis. Here's what's included in our diesel engine repair services:
- Full diesel diagnostics using factory-level scan tools to pinpoint fault codes and performance issues
- Cummins diesel repair from technicians with direct manufacturer training
- Diesel oil change and fluid service using the correct specifications for your engine
- Turbocharger, injector, and fuel system repair
- Heavy duty diesel repair for trucks, construction equipment, and commercial vehicles
- Cooling system, gasket, and head repair to stop overheating before it causes real damage
If your engine needs more than repair, including transmission or brake work, our diesel drivetrain repair team handles that under the same roof.
How we work
Our Repair Process for Trucks and Fleets
We built our process around getting your equipment diagnosed accurately and back in service quickly, whether you bring it to our Palmetto shop or need us on-site.
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Step 1: Diagnostic Evaluation
We start with a full diesel diagnostics check, reading fault codes and inspecting the engine for the root cause rather than just the symptom.
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Step 2: Written Estimate
You get a clear, itemized estimate before any work begins, so there are no surprises when the invoice arrives.
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Step 3: Repair or Rebuild
Our diesel engine mechanic team completes the repair using OEM-quality parts from our large local inventory, minimizing wait time on hard-to-find components.
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Step 4: Road Test and Follow-Up
Every engine is road tested or run under load before it goes back to work, and we follow up to confirm the repair is holding under real conditions.
Why Choose Us
Why Fleets and Owner-Operators Choose Gulf Coast Power
Manatee and Sarasota County businesses trust us because we treat every engine like it's the one keeping their operation running, because it usually is.
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ASE Certified and Cummins Trained
Our diesel engine mechanic team holds ASE certifications and direct Cummins training, so complex repairs and warranty work are handled correctly the first time.
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Mobile Diesel Mechanic Coverage
Our mobile diesel mechanic units bring on site diesel repair to your yard, job site, or roadside location across Manatee and Sarasota Counties, cutting the tow bill and the downtime.
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Locally Owned Since 1999
We've served commercial diesel repair customers along the Gulf Coast for more than two decades, with a large parts inventory and pricing that includes a price match guarantee.
Signs Your Diesel Engine Needs Attention
Diesel engines tend to give warning signs before a small issue becomes an expensive breakdown. Watch for these common problems in trucks, equipment, and diesel-powered RVs on the road between Venice and North Port:
Excessive smoke from the exhaust, whether black, white, or blue, usually points to a fuel, oil, or combustion issue that needs prompt diesel diagnostics. A noticeable loss of power under load, hard starting in cooler weather, or a check-engine light are all reasons to get the engine looked at before a job or trip.
If your rig pairs a diesel engine with an onboard generator, such as a diesel pusher motorhome, don't ignore separate issues showing up there. We also provide rv generator repair and onan generator repair for coach owners who need both systems running before a trip.

Related diesel services
Other Diesel Services We Provide
Beyond engine repair, our shop and mobile units cover the full range of diesel systems your truck or equipment depends on.
- Diesel AC Repair
Diesel AC Repair
Keep the cab comfortable with AC diagnostics and repair built for heavy duty diesel systems.
- Diesel Drivetrain and Brake Repair
Diesel Drivetrain and Brake Repair
Full diesel drivetrain repair and brake service to keep your truck safe and moving under load.
- Diesel Engine Maintenance
Diesel Engine Maintenance
Scheduled preventative maintenance, including diesel oil change service, to catch problems early.
- Diesel Suspension Repair
Diesel Suspension Repair
Suspension repair for trucks and heavy equipment hauling heavy, uneven loads daily.
- Diesel Transmission Repair
Diesel Transmission Repair
Transmission diagnostics and repair to keep power moving smoothly from engine to wheels.
- Mobile Diesel Repair
Mobile Diesel Repair
On site diesel repair at your yard, job site, or roadside location across our service area.
- Truck Diagnostics
Truck Diagnostics
Full truck diagnostics to identify fault codes and performance issues before they become breakdowns.
Diesel Engine Repair Across Manatee and Sarasota Counties
Gulf Coast Power provides commercial diesel repair, mobile service, and shop repair throughout the Gulf Coast region, including:
Common questions
Answers before you call
The questions we are asked most, answered by the team that does the work.
Read all our FAQsWhat does diesel engine maintenance actually include?
A typical service includes oil and fluid service, filter replacement, and a full diesel diagnostics check on belts, hoses, and electrical connections. For customers running fleets or heavy equipment, we build out fleet diesel maintenance schedules so trucks and generators get serviced before small issues turn into major repair jobs. Regular diesel engine maintenance is almost always cheaper than an emergency breakdown.
Can you work on my boat's engine and generator, or just one or the other?
Both. We handle diesel marine engine repair and diesel boat generator repair as part of our marine diesel services, checking your engine and onboard generator together whenever possible. Many of our Longboat Key and Anna Maria customers have us check both systems during the same visit to save a second trip.
Are your technicians ASE certified diesel mechanics?
Yes. Our team includes ASE certified diesel mechanics with hands-on experience across marine engines, generators, and diesel trucks. We also carry Cummins certified mechanic credentials, so you're working with technicians trained directly by the manufacturer on diagnostics, repair procedures, and parts specifications rather than general guesswork.
Get Your Diesel Engine Back on the Road
A diesel engine problem doesn't get cheaper the longer it waits. Call the team trusted by fleets and owner-operators across Manatee and Sarasota Counties since 1999, and let's get your truck or equipment diagnosed and repaired.
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