Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2009SILVERADO 2500 2WD V8-6.6L DSL TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMS
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL Turbo
Engine Control Module: Diagrams
2009 Chevrolet Silverado 2500 2WD V8-6.6L DSL TurboSECTION Diagrams
Component Connector End Views
Engine Control Module (ECM) X1 (4.3L)
Engine Control Module (ECM) X1 (Diesel)
Engine Control Module (ECM) X1 (Gas Except 4.3L/LY6/HP2)
Engine Control Module (ECM) X1 (HP2)
Engine Control Module (ECM) X1 (LY6)
Engine Control Module (ECM) X2 (4.3L)
Engine Control Module (ECM) X2 (4.8L/LY6 or 6.2L with Y91)
Engine Control Module (ECM) X2 (5.3L/L76 or 6.2L Except Y91)
Engine Control Module (ECM) X2 (Diesel)
Engine Control Module (ECM) X2 (HP2)
Engine Control Module (ECM) X3 (HP2)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.