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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0751 or P0752: Shift Solenoid Valve 1 Performance - Stuck >> Circuit/System Verification

Circuit/System Verification

    NOTE:

    If other DTCs are set, diagnose those DTCs first.

  1. Engine idling at the normal operating temperature, gear selector in the Park position, parking brake applied, and drive wheels chocked.
  2. Verify the transmission fluid level and condition is correct. Refer to Transmission Fluid Level and Condition Check .
    • If the transmission fluid level and condition is not correct 

      Repair as necessary

    • If the transmission fluid level and condition is correct 
  3. From a stop, accelerate to 72 km/h (45 mph) with the scan tool Calculated Throttle Position greater than 15%. Perform this test 8 times.
  4. Verify DTC P0751 or P0752 did not set.
    • If DTC P0751 or P0752 set 

      Refer to Circuit/System Testing.

    • If DTC P0751 or P0752 did not set 
  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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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