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Home >> Chevrolet >> 2014 >> Traverse LS, 4D Utility >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC B1023: Integral Control Switch >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 GMC Acadia, 2015 Chevrolet Traverse, and 2015 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Reprogram the HVAC control module. The module should successfully reprogram.
    • If the module will not reprogram, replace the HVAC control module that set the DTC.
  2. With a scan tool, clear the DTC.
  3. Ignition OFF.
  4. Wait 60 seconds, then recheck for DTCs. DTC B1023 should not set.
    • If DTC B1023 sets, replace the module.
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