When it comes to Ford, GMC, Chevy, and Dodge/Ram diesel repair in Littleton, CO, choosing the right shop is essential. Diesel trucks are built for power and durability, but they require specialized knowledge, advanced diagnostic tools, and expert-level repairs to stay in peak condition.
At Branch Automotive, diesel repair isn’t just something we do—it’s what we specialize in. Our team features ASE Master Technicians, GM and Ford factory-trained experts, and one of the few ASE World Class Technicians in the country. Whether you drive a Duramax, Powerstroke, or Cummins-powered truck, you can trust us to provide the best service possible.
Beyond our expertise, we are committed to honest service, standing behind our customers, and making the repair process straightforward and stress-free.
Why Choose Diesel Repair Specialists?
Diesel Trucks Require Specialized Knowledge
While many Littleton auto repair shops service diesel trucks, few specialize in them. Diesel engines operate differently than gas engines, featuring:
- Higher compression ratios
- Turbocharged systems
- Complex emissions controls
At Branch Automotive, we diagnose and repair Duramax, Powerstroke, and Cummins engines with precision. Whether you drive a Ford Super Duty, GMC Sierra HD, Chevy Silverado HD, or Ram 2500/3500, our team has the training and experience to service, repair, and maintain your truck properly.
We Stand Behind Our Work
We don’t believe in quick fixes or temporary solutions. Every repair is done with:
- Integrity
- Attention to detail
- The highest quality parts
Most repairs come with a 24-month/24,000-mile nationwide warranty, and for specific services—such as Powerstroke diesel engine repairs—we extend our warranty to 36 months or 36,000 miles.
If you’re looking for a diesel specialist in Colorado that stands behind their work, you’ve found the right place.
Factory-Level Diagnostics for Ford, GMC, Chevy, and Dodge/Ram Diesel Trucks
Modern Ford, GMC, Chevy, and Dodge/Ram diesel trucks have advanced onboard computers that monitor:
- Fuel injection timing
- Turbo boost pressure
- Emissions systems
Proper diagnostics require factory-level scan tools, which many Littleton auto repair shops don’t have.
At Branch Automotive, we use OEM scan tools and software for Ford, GM, and Dodge/Ram diesel trucks, allowing us to:
- Accurately diagnose issues, saving time and money
- Perform software updates and calibrations—just like the dealership
- Properly diagnose emissions and aftertreatment system problems
Heavy-Duty Truck Service Requires the Right Equipment
Diesel trucks are built for towing, hauling, and tough jobs, which means they need specialized tools and equipment for proper repairs.
At Branch Automotive, our shop is equipped with:
- Chassis dynamometer testing to simulate real-world driving conditions
- Heavy-duty alignment and lifting equipment for large diesel trucks
- Advanced fuel system diagnostics for Duramax, Powerstroke, and Cummins engines
Whether you need Chevy repair in Littleton, CO, Ram 2500 service, or heavy-duty truck diagnostics, we have the tools and expertise to do the job right.
Common Diesel Repairs We Handle
Cummins Diesel Engine Repairs for Dodge and Ram Trucks
The Cummins diesel engine found in Dodge and Ram trucks is legendary for power and durability. However, like any diesel engine, it requires regular maintenance and expert diagnostics to keep it running efficiently.
Common Cummins Issues We Service:
- EGR and DPF Problems – Excessive soot buildup can clog exhaust systems, causing power loss and poor fuel economy.
- Turbocharger Wear – Worn turbos reduce efficiency, often signaled by a whining noise or loss of boost.
- Fuel System Failures – Bad injectors or high-pressure fuel pump failures can cause rough idling and power loss.
At Branch Automotive, our technicians are trained in Cummins diesel repair, using factory-level diagnostics to quickly identify and resolve issues before they become costly problems.
Turbocharger Repairs and Maintenance
Turbochargers are essential for diesel performance, but they can fail due to:
- Oil starvation
- Excessive heat
- Carbon buildup
Signs Your Turbo Needs Attention:
- Loss of power or sluggish acceleration
- Excessive smoke from the exhaust
- Whining or high-pitched noises from the engine
Regular oil changes and proper driving habits can extend the life of your turbo. If you experience a loss of boost or sluggish performance, visit our diesel specialists in Colorado for a full diagnostic.
DEF System and Aftertreatment Issues
Modern Ford, GMC, Chevy, and Dodge/Ram diesel trucks use aftertreatment systems to reduce emissions. These include:
The latest generation of diesel trucks has smaller components that require frequent cleaning cycles (regenerations) to stay operational. Ignoring these systems can lead to:
- DEF quality warnings (often due to faulty sensors, not bad fluid)
- Clogged DPFs that reduce power and fuel economy
- Expensive emissions repairs if problems are ignored
At Branch Automotive, we help truck owners in Littleton and Highlands Ranch, CO stay ahead of DEF system issues with regular inspections and preventative maintenance.
Fuel Injector and Glow Plug Failures
Dirty fuel injectors or failing glow plugs can lead to:
- Hard starting, especially in cold weather
- Loss of power and poor fuel efficiency
- Excessive white or black smoke from the exhaust
To extend the life of your injectors, we recommend:
- Regular fuel filter changes
- Using high-quality diesel fuel additives
If you notice starting issues or rough idling, our diesel specialists in Colorado can diagnose and fix the problem before it worsens.
Why Branch Automotive? Because We Truly Care
At Branch Automotive, we are not just diesel mechanics—we are diesel specialists. Our shop is built on expertise, trust, and a commitment to doing the job right.
- We stand behind our customers. Our warranty and honest service ensure peace of mind.
- We specialize in domestic diesel trucks. Our technicians are factory-trained and highly experienced.
- We are fun and easy to talk to. Diesel repair does not have to be stressful. We explain everything clearly, making the process simple and straightforward.
Schedule Your Diesel Repair Today
Whether you need heavy-duty truck service, routine maintenance, or complex engine diagnostics, Branch Automotive is here to help.
Visit us at: 6030 E County Line Road, Littleton, CO 80126
Call us today at: (303) 771-2224
Schedule online at: Branch Automotive
Your Ford, GMC, Chevy or Dodge/Ram diesel truck is built for tough jobs—keep it running at its best with expert service from Branch Automotive.
