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Home >> Cadillac >> 2017 >> XT5 Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission Range Select System >> Diagnostic Information and Procedures >> DTC P17CB: Hybrid Charging System Park Request Signal Message Counter Incorrect >> Circuit/System Verification
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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.

    • 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

    • If DTC P17CB is not set 
  5. All OK.
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