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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC - Automatic >> Diagnostic Information and Procedures >> Blower Motor Malfunction >> Diagnostic Aids

Diagnostic Aids

Be sure the blower motor housing is not shorted to a grounded surface causing the blower motor to always be on in high speed.