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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 453 (HVAC System - Manual) >> Diagnostic Information and Procedures >> DTC B0413, B0423, B0433, B3779, or B3782 >> Circuit/System Verification

Circuit/System Verification

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Ignition ON, command the appropriate actuator in both directions with a scan tool. The scan tool door position parameter reading should be between 3 and 253 counts.

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