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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 >> Air Conditioning Compressor Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, Engine running
  2. Press the A/C request switch. The A/C compressor clutch should engage.
  3. Place the mode switch in the defrost position. The A/C compressor clutch should engage.
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