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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Automatic Transmission - 6T40 - DTC P0601 To DTC P0971) >> Diagnostic Information and Procedures >> DTC P0961, P0962, P0963: Line Pressure Control Solenoid Valve >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Engine idling, transmission in Park, with service brake applied. Move the S3 Transmission Shift Lever into each gear position for 2-3s and back into the Park position.
  2. Verify the scan tool parameters listed below do not display Malfunction:
    • Line Pressure Control Solenoid Valve Performance Test Status
    • Line Pressure Control Solenoid Valve Control Circuit Low Voltage Test Status
    • Line Pressure Control Solenoid Valve Control Circuit High Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing.

    • If Malfunction is not displayed 
  3. 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.
  4. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  5. All OK.