Duramax Diesel Specialists
Chevy & GMC Diesel Repair Experts
Your Duramax is built to last 300,000+ miles, but only with proper care. Paradise-Performance specializes in every Duramax generation from LB7 to L5P, keeping your Chevy or GMC diesel running strong in North Texas.
Call (817) 382-2316 NowNorth Texas Duramax Diesel Repair Authority
Since 2001, the Duramax diesel engine has powered millions of Chevrolet and GMC trucks across America. Built in partnership with Isuzu, these engines are legendary for their durability and power. But like any sophisticated diesel, they require specialized knowledge and proper maintenance to reach their full potential.
At Paradise-Performance, we’ve worked on every Duramax generation ever produced. Our diesel technicians understand the unique characteristics, common failure points, and performance potential of each engine code. Whether you’re dealing with an early LB7 injector issue or a late-model L5P emissions problem, we have the expertise to get your truck back to peak performance.
Why Your Duramax Needs Diesel Specialists
- Complex Fuel Systems: High-pressure common rail systems require specialized diagnostic equipment and training
- Emissions Compliance: Modern Duramax engines have intricate DPF, SCR, and DEF systems that general mechanics often misdiagnose
- Generation-Specific Issues: Each Duramax has unique problems that require specific knowledge and experience
- Performance Tuning: Improper modifications can void warranties and cause expensive damage
- Dealer Limitations: Many dealerships lack the diesel-specific expertise for complex repairs
Every Duramax Generation Covered
Each Duramax generation has its own personality, strengths, and common issues. Our technicians are trained on all variants and keep current with the latest technical service bulletins and repair procedures.
LB7 Duramax
2001-2004 • 235-300 HP
Known Issues: Injector failures, water pump leaks, overheating problems
Our Expertise: We perform complete injector replacements with updated parts and handle cooling system rebuilds.
LLY Duramax
2004.5-2005 • 310 HP
Known Issues: Turbo failures, head gasket problems, EGR valve issues
Our Expertise: Turbocharger rebuilds and replacements, head gasket service, EGR system repairs.
LBZ Duramax
2006-2007 • 360 HP
Known Issues: Water pump failures, glow plug problems, transmission issues
Our Expertise: Considered the most reliable Duramax, but we handle cooling system maintenance and glow plug replacements to keep them that way.
LMM Duramax
2007.5-2010 • 365 HP
Known Issues: DPF clogging, NOx sensor failures, FICM problems
Our Expertise: DPF cleaning and replacement, emissions system diagnostics, FICM repairs.
LML Duramax
2011-2016 • 397-445 HP
Known Issues: CP4 injection pump failures, DEF system problems, turbo actuator issues
Our Expertise: CP4 pump replacements with fuel system cleaning, DEF system repairs, turbo actuator service.
L5P Duramax
2017-Present • 445+ HP
Known Issues: DEF injector problems, NOx sensor failures, software-related issues
Our Expertise: Latest diagnostic equipment for complex electrical systems, DEF injector replacement, software updates.
Complete Duramax Services
Diagnostic & Repair Services
- Advanced Diagnostics: Tech 2, MDI, and generation-specific scan tools for accurate diagnosis
- Injector Service: Testing, cleaning, replacement, and calibration for all generations
- Turbocharger Repair: Rebuild, replacement, and performance upgrades
- Fuel System Service: CP4 pump replacement, fuel filter service, system cleaning
- Emissions System Repair: DPF, SCR, DEF system diagnosis and repair
- Cooling System Service: Water pump, thermostat, radiator, and EGR cooler service
Preventive Maintenance
- Oil Changes: High-quality 15W-40 or 5W-40 diesel oil with proper filters
- Fuel Filter Service: Regular replacement to protect injection system
- DEF Quality Monitoring: Ensure proper DEF concentration and quality
- Air Filter Replacement: Keep intake system clean for optimal performance
- Transmission Service: Allison transmission maintenance and repair
Performance Services
- ECM Tuning: Safe performance upgrades with warranty protection
- Cold Air Intakes: Improve airflow and throttle response
- Exhaust Systems: Reduce backpressure and improve sound
- Suspension Upgrades: Handle increased power and towing loads
Our Duramax Work Gallery
Recent Duramax Repair Success Story
The Problem: A customer brought us their 2015 GMC Sierra 2500HD with an LML Duramax experiencing reduced power, rough idle, and frequent “Service DEF System” warnings. The truck had been to two other shops with no resolution.
Our Diagnosis: Using our advanced diagnostic equipment, we discovered multiple issues: a failing DEF injector, contaminated DEF fluid, and a NOx sensor reading incorrectly due to carbon buildup in the exhaust system.
The Solution: We replaced the DEF injector with an updated part, performed a complete DEF system flush, cleaned the NOx sensors, and updated the ECM software with the latest calibration. Total repair time: 2 days.
The Result: Truck is running perfectly with full power restored. Customer saves over $2,800 compared to dealership quote and gets back to work without downtime. Six months later, no issues.
Why This Repair Required Duramax Expertise
- DEF system diagnosis requires specialized scan tools and knowledge of GM’s unique system design
- Proper DEF injector installation requires precise calibration procedures
- NOx sensor contamination is often misdiagnosed as sensor failure by general repair shops
- ECM updates require dealer-level access and Duramax-specific training
Your Duramax Deserves Expert Care
Don’t trust your investment to mechanics who “work on everything.” Our Duramax specialists have the knowledge, tools, and experience to keep your truck running strong for years to come. Call now for expert diagnosis and repair.
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