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2013
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Sierra 1500 4WD V6-4.3L
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Engine Control Module
Engine Control Module
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Description and Operation
Testing and Inspection
Locations
Component Locations
Engine Control Module (ECM)
Left Rear of the Engine Compartment Components
Rear of the Engine Compartment Components
Engine Control Module (ECM) X1
Engine Control Module (ECM) X2
Harness Locations
Engine Control Module (ECM) X1
Engine Control Module (ECM) X2
Service and Repair
Diagrams
Engine Control Module (ECM) X1
Engine Control Module (ECM) X1 (L20, L9H, LC9 or LMG)
Engine Control Module (ECM) X2 (L9H with Y91)
Engine Control Module (ECM) X2
Engine Control Module (ECM) X2 (LMG, LC9, LY5, LH6, L76, or L9H without Y91)
Technical Service Bulletins
