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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