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Sierra 1500 4WD V8-6.0L Hybrid
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Engine Control Module
Engine Control Module
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Description and Operation
Testing and Inspection
Locations
Service and Repair
Diagrams
Engine Control Module (ECM) X1 (L20, L9H, LC9 or LMG)
Engine Control Module (ECM) X2 (L9H with Y91)
Engine Control Module (ECM) X2 (LMG, LC9, LY5, LH6, L76, or L9H without Y91)
Technical Service Bulletins
