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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1553 (HVAC System - Manual) >> Diagnostic Information and Procedures >> DTC B3933 >> Component Testing

Component Testing

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  1. Test the evaporator air temperature sensor by varying the sensor temperature while monitoring the sensor resistance.
  2. Compare the readings with the Sensor Resistance Table and verify that the resistance is within 5 percent of the specification.
    • If not within the specified range, replace the sensor.