2002 Chevrolet Chevrolet Silverado 3500

Reliability tier: verified - see /disclosure/

Engine: 6.6L Duramax LB7 (Duramax, 6.6L)

LB7 generation: 300hp @ 3,100 / 520 lb-ft @ 1,800; common-rail Bosch CP3, Allison 1000 behind the diesel (context only). Copper-injector era: the LB7's injector service is the generation's defining repair (documented in the Duramax history source).

Applicable failure modes (4)

• EGR cooler clogging / failure (LB7-LMM)
• CP3 pump / fuel system contamination
• Head gasket failures (higher mileage / load)
• LB7 injector failures (the defining repair of the generation)

Applicable parts (25)

• Duramax LB7 CP3 Injection Pump (Reman OEM)
• Duramax CP3 Fuel Injection Pump Seal (OEM)
• duramax-lb7-lmm: dpf (honest catalog gap)
• Duramax LB7 EGR Cooler (OEM)
• Duramax LB7 EGR Valve (OEM)
• Duramax Exhaust Manifold (OEM)
• Duramax LB7 Performance Sending Unit, Fleece SureFlo (2001-2004, for an aftermarket lift pump)
• Duramax LB7 Fuel Filter Head Assembly (OEM)
• Duramax Fuel Filter Service Kit (OEM)
• Duramax LB7 Fuel Tank Sender (OEM)
• Duramax LB7 Glow Plug Control Module (OEM)
• Duramax LB7 Glow Plug (OEM)
• Duramax LB7 Head Gasket Kit - Solid Seal, w/ Grade-C Head Gasket
• Duramax LB7/LLY Cylinder Head Gasket, Grade-Coded (OEM)
• Duramax 6.6L Head Stud Kit (LB7-LMM 2001-2010)
• Duramax LB7 Fuel Injector Kit 8 pcs (Reman OEM)
• Duramax 2001-2010 Lift Pump Upgrade (FASS Titanium Signature C10 100G)
• Duramax Engine Oil Cooler Assembly (OEM)
• Duramax LB7 In-Tank Lift Pump Upgrade (Fleece PowerFlo, 2001-2004)
• Duramax LB7 Fuel Rail Pressure Sensor (OEM)
• Duramax Engine Coolant Thermostat (OEM)
• Duramax Turbo Coolant Thermostat Assembly (OEM)
• Duramax LB7 Turbocharger (Reman OEM)
• Duramax LB7/LLY Water Pump (OEM)
• Duramax Water-In-Fuel Indicator Sensor (OEM)

Platform recipes (6)

• CP3 and fuel-system contamination service (fm-dmx-fuel-system-health): the Bosch CP3 is fed by the OEM filter setup, and water/debris are the standing threats
• LMM DPF-era service (fm-dmx-dpf-era-service): the LMM (from mid-2007) is the first DPF Duramax
• EGR cooler service (fm-dmx-egr-cooler): the Duramax has carried cooled EGR since the LB7 (catalog-verified 97288793 for 2002-2004) and the coolers clog with carbon and eventually leak - the LLY-era heat reputation makes cooler health the first check on heat complaints
• Head-gasket replacement path (fm-dmx-head-gaskets): stock gaskets age and elevated cylinder pressures finish them
• Repair path for the LB7's defining failure (fm-dmx-lb7-injectors): hard starts, white smoke, fuel dilution on 2001-early-2004 trucks
• VGT turbo service path (fm-dmx-vgt-turbo): boost flutter, slow spool, smoke under load

Recalls that include this truck (1)

• 01V-220 (June 26, 2001) - INTERIOR LIGHTING: VEHICLE DESCRIPTION: CERTAIN PICKUP TRUCKS EQUIPPED WITH 6.6L DIESEL ENGINES FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 105, "HYDRAULIC AND ELECTRIC BRAKE SYSTEMS." THESE VEHICLES HAVE A BRAKE SYSTEM WARNING LIGHT IN...

Matched by the model and model year NHTSA lists for each recall - a recall often covers only part of a year's production, so read its text for the build dates and versions it names. Whether a recall is still open on your VIN is not known here; check nhtsa.gov/recalls. All recalls, investigations and bulletins for this engine: /recalls/duramax-lb7-lmm/

Reference for this truck