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2014 Chevrolet Silverado 3500 HD
Reliability tier: verified - see /disclosure/
Engine: 6.6L Duramax LML (Duramax, 6.6L)
Bosch CP4.2 high-pressure pump (the only Duramax generation with a CP4 - the contamination-prone pump the L5P's Denso HP4 replaced), 29,000 psi piezo injectors, first Duramax with DEF/SCR aftertreatment (5.3-gal DEF tank, DPF retained), Garrett VVT turbo; Allison 1000 6-speed behind the diesel (context only - engine platform). B20 biodiesel-capable.
Applicable failure modes (9)
- Cooling system wear: water pump, fan clutch, oil cooler (LML)
- Bosch CP4.2 high-pressure pump failure and fuel-system contamination
- DEF system failures: tank heater, dosing, quality (LML)
- DPF regeneration service (retained system)
- EGR valve / cooler carbon and coolant service (LML)
- Glow plug / control module cold-start service (LML)
- Piezo injector failures / replacement economics (LML)
- NOx sensor failures (LML SCR system)
- VGT turbo vane carbon / actuator wear (Garrett VVT)
Applicable parts (49)
- Duramax LML Auxiliary Heated Fuel Filter Kit, 2011-2016
- duramax-lml: charge-air-cooler-pipe (honest catalog gap)
- Duramax LML Charge-Air Cooler (OEM)
- Duramax LML DEF Doser Injector (OEM, catalog gap)
- duramax-lml: def-fluid (service item)
- Duramax LML DEF Pump/Module Kit (OEM)
- Duramax LML DEF Tank Reservoir Kit 2012-2016 (OEM)
- Duramax LML DEF Tank Assembly (OEM)
- Duramax LML DEF Tank Reservoir Wiring Harness 2011-2014 (OEM)
- Duramax LML DEF Tank Module (OEM)
- Duramax LML Diesel Particulate Filter 2013-2015 (OEM)
- duramax-lml: dpf-pressure-pipe (honest catalog gap)
- Duramax LML DPF Differential Pressure Sensor (OEM)
- Duramax LML DPF Pressure Sensor, Early Chain (OEM)
- Duramax LML EGR Cooler 2011-2014, Cab-Qualified (OEM)
- Duramax LML EGR Cooler 2011-2016 (OEM)
- Duramax LML EGR Cooler 2013-2016 (OEM)
- Duramax LML EGR Valve (OEM)
- Duramax LML Emission Control Valve, Parallel Chain (OEM)
- Duramax LML Exhaust Temperature Sensor, Position 3 (OEM)
- Duramax LML Exhaust Temperature Sensor, Position 5 (OEM)
- Duramax LML Fan Clutch 2011-2014 (OEM)
- Duramax LML Fuel Contamination Repair Kit, 2011-2016 (Alliant Power / XDP)
- Duramax LML Fuel Injection Pressure Relief Valve (OEM)
- Duramax LML Fuel Injection Rail, Left (OEM)
- Duramax LML Fuel Injection Rail, Right (OEM)
- Duramax LML Glow Plug (OEM)
- Duramax LML Glow Plug Control Module 2013-2016 (OEM)
- Duramax LML High-Pressure Fuel Pump Service Kit (OEM)
- Duramax LML Fuel Injector Kit 2011-2016 (OEM)
- Duramax LML Fuel Injector Assembly, Reman Kit (OEM)
- Duramax LML Intake Air Heater (OEM)
- Duramax LML In-Tank Fuel Pump Module, Box-Tank Variant (OEM)
- Duramax LML In-Tank Fuel Pump Module, Standard-Tank Variant (OEM)
- Duramax LML NOx Sensor (OEM, catalog gap)
- Duramax LML Engine Oil Cooler Assembly (OEM)
- Duramax LML In-Tank Lift Pump Upgrade (Fleece PowerFlo, 2011-2016)
- Duramax LML Silicone Coolant Hose Kit (PPE, 2011-2016)
- Duramax LML Radiator Assembly (OEM)
- Duramax LML Rail Pressure Sensor (OEM)
- Duramax LML Exhaust-Tract Fuel Injector for DPF Regeneration (OEM)
- duramax-lml: thermostat (honest catalog gap)
- Duramax LML Turbocharger Control Valve (OEM)
- Duramax LML Turbocharger Sensor (OEM)
- Turbocharger Speed Sensor, Shared GM Diesel Service Part (OEM)
- Duramax LML Turbocharger Assembly (OEM)
- Duramax LML Turbocharger Assembly, Reman (OEM)
- Duramax LML Water Pump (OEM)
- Duramax LML Radiator, XDP X-TRA Cool Direct-Fit XD292 (2011-2016)
Platform recipes (4)
- Bosch CP4.2 contamination repair for the LML (mode fm-lml-cp4-pump-failure): the pump's roller wears through and floods the high-pressure circuit with metal
- DEF subsystem repair for the LML (mode fm-lml-def-system) - the first DEF/SCR Duramax, and the early years carry the heaviest complaint load
- Low-pressure fuel system health for the LML (mode fm-lml-cp4-pump-failure's prevention side and fm-lml-injector-failure): the LML has an in-tank lift pump feeding the CP4, and a rail relief valve that opens under overpressure
- Cold-start repair for the LML (mode fm-lml-glow-plug): glow plugs fail open with age and the control module's drivers fail with or without plug faults