Recent Blog Posts

Expert Diesel Truck Repair

Southern Louisiana Area

1-Year/12,000-Mile Warranty on Parts and Labor 

24/7 Emergency Services  (Tractor-Trailers Only)

Works With Insurance Companies

Request Service

Hero Request Form

Diesel Experts You Can Trust

Coy's Diesel Sales, Service & Performance is your reliable partner for all things diesel in Southern Louisiana. We've been serving our community for over two decades, bringing unparalleled expertise to every job. Our family-owned business understands the importance of your vehicle, whether it's a light-duty pickup or a heavy-duty semi-truck. Our technicians are certified, which means we've got the skills and knowledge to handle even the most complex diesel engine issues. When you're stuck on the side of the road, we've got your back.

Our emergency roadside assistance for tractor-trailers is second to none - we'll typically be there within an hour to get you back on track. We don't just fix problems; we prevent them. Our team stays up-to-date with the latest industry advancements through continuing education, ensuring we're always ready to tackle the newest diesel technologies. From fuel system repairs to turbocharger issues, transmissions to digital inspections, we've got the expertise to keep your diesel running smoothly. Contact us today!

Why Choose Us

1-Year/12,000-Mile Warranty on Parts and Labor

Certified Technicians

24/7 Emergency Services (Tractor-Trailers Only)

Works With Insurance Companies

Over 20 Years of Experience

Pre-Purchase Inspection

Fully Licensed and Insured

Coy's Diesel Sales, Service & Performance
A black and white silhouette of a car on a white background.

Light Duty

Our light-duty services cover a wide range of vehicles. We're experts in Ford, GM, GMC, Dodge/Ram, and Isuzu trucks. Whether you're driving a Powerstroke, Duramax, Cummins, or Isuzu engine, we've got the know-how to keep it running at peak performance. Our certified technicians use state-of-the-art diagnostic tools to pinpoint issues quickly and efficiently.

A black and white silhouette of a delivery truck on a white background.

Heavy Duty

When it comes to heavy-duty trucks, we're the pros you can count on. We service Kenworth, Peterbilt, Volvo, Freightliner, and International trucks. Our team is well-versed in Detroit, Cummins, International, and Caterpillar engines. We understand that downtime means lost revenue, so we work efficiently to get your rig back on the road as quickly as possible.

A black and white silhouette of a tow truck on a white background.

Emergency Roadside Assistance

Breakdowns don't wait for convenient times. That's why we offer 24/7 emergency roadside assistance, for tractor-trailers only. Our rapid response team can typically reach you within an hour, equipped with the tools and parts to get you moving again. We understand the stress of being stranded, and we're committed to providing quick, reliable service to get you back on schedule.

A black and white icon of a van with a wrench in the back.

Brands

At Coy's Diesel, we work with a wide array of brands to ensure we can service virtually any diesel vehicle that comes our way. For medium-duty trucks, we're experienced with Kenworth, Freightliner, Peterbilt, Ford 650, and International. Our extensive knowledge spans across multiple manufacturers, allowing us to provide comprehensive service.

A thumbs up with three stars in a speech bubble.

Here's what our satisfied customers are saying...

At Coy's Diesel Sales, Service & Performance, we take pride in providing exceptional diesel services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review  of Coy's Diesel Sales, Service & Performance and let others know what you think.