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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1605 (Transfer Case - Mp 1625/1626-NQF) >> Diagnostic Information and Procedures >> DTC B2725 >> Circuit/System Verification

Circuit/System Verification

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  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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