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Hummer
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2007
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H3 Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls And Fuel - 3.7L - DTC P2120 To DTC P2444
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DTC P2444
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Repair Verification
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Repair Verification
With the ignition ON and the engine OFF, observe that the AIR pump is not operating.