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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1955 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC B0158, B0163, B0168, B0173, B0178, B0509, B0514, B3578, or B3583 >> Component Testing

Component Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the appropriate temperature sensor.
  2. Test for the appropriate resistance between the signal terminal A or 1 and the low reference terminal B or 2. Refer to Sensor Resistance Table for Sensor Resistance Table  resistance values.
    • If not within the specified range, replace the sensor.
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