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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Automatic Transmission - 6L80 (MYC) Or 6L90 (MYD) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P0601, P0603, P0604, Or P062F: Control Module Memory >> 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, 2018 Chevrolet Suburban 3500 HD, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF for one minute. Ignition ON.
  2. Verify with a scan tool that DTC P0601, P0603, P0604, or P062F is not set.
    • If any of the DTCs set 

      Replace the Q8 Control Solenoid Valve Assembly.

    • Go to next step: If none of the DTCs set 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observe from the Freeze Frame/Failure Records data.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Replace the Q8 Control Solenoid Valve Assembly

    • Go to next step: If the DTC does not set 
  5. All OK.
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