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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Diagnostic Information and Procedures >> DTC B1580 or B1590 >> Conditions for Setting the DTC >> B1590

Conditions for Setting the DTC: B1590

An improper voltage level is seen the Driver/Passenger Mirror Vertical Position Sensor Signal circuit.