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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Automatic Transmission - 6T40 (MH8 MHB) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P1876: Up and Down Shift Enable Switch >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
    WARNING:

    Refer to Parking Brake and Drive Wheels Warning .

  1. Verify DTC P182E or P1915 was not set by reviewing the scan tool Freeze Frame/Failure Records.
    • If DTC P182E or P1915 was not set 
  2. Ignition ON.
    3. NOTE:

    The engine may have to be started to move the shift lever out of the Park position. Once out of the Park position, the engine can be turned OFF.

  3. Verify the gear shift lever position matches the scan tool TCM Internal Mode Switch parameter while slowly moving the gear shift lever from Park through all ranges.
    • If the specified values are correct 
  4. Shift lever in the M position.
  5. Verify the scan tool Driver Shift Request parameter changes from Inactive to Upshift when the plus button is pressed, and from Inactive to Downshift when the minus button is pressed.
    • If the Driver Shift Request parameter does not display the correct values 

      Refer to Circuit/System Testing.

    • If the Driver Shift Request parameter displays the correct values 
  6. 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.
  7. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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