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 MANUALSCHEVROLET2011SILVERADO 1500 4WD V8-6.2LREPAIR AND DIAGNOSISDIAGRAMSCONNECTOR VIEWSENGINE CONTROL MODULEENGINE CONTROL MODULE (ECM) X1
2011 Chevrolet Silverado 1500 4WD V8-6.2L
Engine Control Module (ECM) X1
2011 Chevrolet Silverado 1500 4WD V8-6.2LSECTION Engine Control Module (ECM) X1
ENGINE CONTROL MODULE (ECM) X1
(RPO L20, L9H, LC9, or LMG)
RPO Codes
RPO L20, VIN A - Engine Gas, 8 Cylinder, 4.8L SFI, E85 MAX, Iron, GM
RPO L9H, VIN 2 - Engine Flexible Fuel (Gas/Alcohol), 8 Cylinder, 6.2L, SFI, Aluminum, GM
RPO LC9, VIN 3 - Engine Flexible Fuel (Gas/Alcohol), 8 Cylinder, 5.3L SFI, Aluminum, Cylinder Deactivation, GM
RPO LMG, VIN 0 - Engine Flexible Fuel (Gas/Alcohol), 8 Cylinder, 5.3L, SFI, V8, OHV, CYL Deactivation, Iron, GM
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.