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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1606 (Transfer Case - Mp 3023/3024-NQH) >> Diagnostic Information and Procedures >> DTC B2725 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Key ON, engine OFF.
  2. Connect a scan tool.
  3. Verify that all mode selections of the transfer case shift control switch (TCSCS) match the following parameters in the Data Display feature of the scan tool:
    • Mode Switch Selected
    • Transfer Case Position
    • The corresponding Mode Indicator Light
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