Mike's Workshop Manuals
: Service manuals for every vehicle
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Hummer
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2009
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H2 4D Utility Pickup
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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 - 6.2L - DTC P1174 To DTC P2635
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DTC P1174 or P1175
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DTC Descriptors
DTC Descriptors
DTC P1174
Fuel Trim Cylinder Balance Bank 1
DTC P1175
Fuel Trim Cylinder Balance Bank 2