LEMON Manuals
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Hummer
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2008
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H3 Base, Automatic
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Repair and Diagnosis
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Engine Performance
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Engine Controls And Fuel - 3.7L - DTC P2544
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DTC P2544
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Circuit/System Testing
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Circuit/System Testing
Observe the DTCs in the scan tool.
If DTC P0604 is set, replace the ECM.
If DTC P0604 is not set, replace the TCM.