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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Transfer Case - Mp 3010 (NP0)) >> Diagnostic Information And Procedures >> DTC P062F Or P064F: Control Module Long Term Memory Performance/Unauthorized Calibration Detected >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF for at least 1 minute to allow for the complete shutdown of the K69 transfer case control module. Engine ON.
  2. Verify that DTC P062F or DTC P064F is only set as a history DTC.
    • If any of the DTC's are set as current 
    1. Program the K69 transfer case control module.
    2. Verify none of the DTC's reset.
      • If any of the DTC's reset, replace the K69 transfer case control module.
      • If none of the DTC's reset
    3. All OK.
    • Go to next step: If any of the DTC's are set as history 
  3. Visually inspect each connector terminal of the K69 transfer case control module connector for damage or corrosion. Repair as necessary.
    NOTE: After inspection, apply Nyogel lubricant 760G to each connector terminal. Ensure each connector and CPA is correctly seated.
  4. Clear DTC P062F or DTC P064F from history.
  5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data. The DTC should not set.
    • If any of the DTC's set 

      Replace the K69 Transfer Case Control Module and perform the Range Actuator Learn procedure.

    • Go to next step: If none of the DTC's set 
  6. All OK.
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