Hummer H1 (2006+). Instruction - page 49

OBD-40

On-Board Diagnostics

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Figure OBD-7: Glow Plug Control Module

11-1-05

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On-Board Diagnostics OBD-41

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Figure OBD-8: Diagnostic Link Connector

OBD-42

On-Board Diagnostics

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Figure OBD-9: EGR Solenoid

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On-Board Diagnostics OBD-43

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Figure OBD-10: Camshaft and Crankshaft Sensors