Duramax Services:
- Advanced diagnostics for all Duramax engine generations
- Fuel system inspection, cleaning, injector testing, and replacement
- CP3 and CP4 injection pump testing and replacement
- Turbocharger diagnostics, boost testing, and repair
- EGR, DPF, SCR, and DEF system diagnostics and service
- Glow plug and glow plug module testing and replacement
- Cooling system repairs including thermostats, radiators, and oil coolers
- Allison transmission fluid and filter service
- Fuel contamination repair and water-in-fuel diagnosis
- Preventive maintenance programs for long-term Duramax health
Your Duramax diesel engine is a high-performance system built for power, efficiency, and durability. To keep it operating at its best, it requires technicians who understand the complexity of GM’s diesel platforms. At By The Book Diesel & Auto Repair, we specialize in light-duty Duramax service and repairs for Chevy and GMC trucks, using advanced GM-specific diagnostic equipment to pinpoint issues with accuracy.
Modern Duramax engines rely on precise fuel delivery, efficient turbocharger operation, and clean emissions pathways. Problems with injectors, injection pumps, turbo boost, EGR components, or DPF regeneration cycles can quickly reduce power or trigger warning lights. Our technicians are trained to diagnose these systems in detail, allowing us to identify the root cause of hard starts, excessive exhaust smoke, reduced towing power, or rough running conditions.
We also handle common Duramax concerns such as CP4 injection pump failure, clogged DPF systems, turbo vane sticking, fuel contamination, overheating caused by clogged oil coolers, and drivability issues linked to sensors or electrical faults. Our professional-grade diagnostic tools allow us to verify DPF regeneration, check injection pressure, read balance rates, and evaluate fuel system performance without unnecessary disassembly.
Routine maintenance is essential for Duramax longevity. Regular fuel filter changes, oil services, and cooling system checks help prevent the high-dollar failures these engines can face. If your truck works hard, tows heavy, or sees frequent stop-and-go driving, preventive maintenance becomes even more important.
For reliable Duramax service backed by real expertise, bring your Chevy or GMC to By The Book Diesel & Auto Repair. We provide accurate diagnostics, honest recommendations, and repairs performed with the precision your Duramax deserves.
