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Hummer
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2010
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H3 Base, Standard
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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 P0335 To DTC P1381
›
DTC P0420
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Repair Procedures
Repair Procedures
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Catalytic Converter Replacement (LLR)
Heated Oxygen Sensor Replacement - Sensor 2
Restricted Exhaust
Exhaust Leakage