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Home › Buick › 2021 › Enclave Preferred › Repair and Diagnosis › Transmission › Automatic Trans › Electronic Transmission Range Select System › Diagnostic Information and Procedures › DTC P17CB › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode.
  2. Check for updated software in T6 Hybrid Powertrain Control Module.
    • If software is not current 

      Perform the programming  procedure for the T6 Hybrid Powertrain Control Module.

    • Go to next step: If software is up to date 
  3. Replace the T6 Hybrid Powertrain Control Module.
  4. Verify DTC P17CB is not set.
    • If DTC P17CB is set 

      Replace the K38 Chassis Control Module

    • Go to next step: If DTC P17CB is not set 
  5. All OK.
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