2008–2010 Chevrolet Silverado 2500HD 6.6L Duramax Diesel Repair
Silverado 2500HD trucks of 2008–2010 with the diesel use the LMM Duramax. Gas V8 trucks share these years, so we confirm by VIN.
At a glance
How to confirm your engine
- The 8th VIN digit identifies the Duramax generation (LMM).
- The RPO sticker in the glove box lists the engine code.
Common failure areas on the Silverado 2500HD
The LMM was the first Duramax with a DPF.
EGR valve and cooler issues.
Diagnostic considerations
- Confirm engine code by VIN
- Injector balance rates
- Rail pressure and supply checks
Related repair services
Diagnosing fuel, emissions, turbo and cooling faults across Duramax generations (LB7 to L5P).
Radiator, water pump, fan clutch and EGR cooler repair for the Duramax in Arizona heat.
Lawful diagnosis and repair of DPF (LMM onward), DEF/SCR (LML onward), EGR and NOx sensors.
Turbo diagnosis for fixed-geometry LB7 and variable-geometry later Duramax engines.
Other Silverado 2500HD generations with the 6.6L Duramax
Closely related trucks
Overlapping years with a different diesel, or the same engine in a sister truck — these are separate configurations, not your exact truck.
Request a quote for your Chevrolet Silverado 2500HD
Frequently asked questions
How do I know my Silverado 2500HD has the 6.6L Duramax LMM?
The 8th VIN digit identifies the Duramax generation (LMM). The RPO sticker in the glove box lists the engine code.
Do you delete DPF or EGR systems?
No. We diagnose and repair emissions systems to their factory function. We do not perform deletes or install defeat devices.
Can you quote a price over the phone?
We diagnose before quoting because diesel repair scope varies widely. Call 602-725-6800 or request a quote to get started.