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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 6T40 - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Control Solenoid Valve and Transmission Control Module Assembly Replacement >> Installation Procedure

Installation Procedure

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    Fig 1: Locating Control Valve Body & Bolts
    GM1998830Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Use care when removing or installing the filter plate assembly. A broken or missing retaining tab may not adequately secure the filter plate to the control solenoid valve assembly, resulting in possible damage or contamination.

  1. Install a NEW control solenoid valve assembly filter plate (4) to prevent fluid leaks past the fluid seals.
  2. Install the control solenoid valve assembly with transmission control module (3).
  3. Hand start the control valve body bolts (1, 2).
  4. Fig 2: Identifying Control Valve Body Bolt Tightening Sequence
    GM2000158Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  5. Secure the 12 control solenoid valve assembly bolts (2) M6 x 97 and tighten in sequence to 10 N.m (89 lb in).
  6. Secure the 3 control solenoid valve assembly bolts (1) M5 x 40.5 and tighten in sequence to 7 N.m (62 lb in).
  7. Fig 3: Identifying Speed Sensor & Shift Position Switch Electrical Connectors
    GM1998829Courtesy of GENERAL MOTORS COMPANY
  8. Connect the input speed sensor electrical connector (1).
  9. Connect the output speed sensor electrical connector (2).
  10. Connect the shift position switch electrical connector (3).
  11. Install the transmission control valve body cover. Refer to Control Valve Body Cover Replacement .
  12. If a NEW TCM has been installed into the vehicle, the NEW module needs to be reprogrammed. Refer to Service Programming System (SPS) Description .
  13. NOTE:

    The Transmission Adaptive Values Learn procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set:

    • Transmission internal service/overhaul
    • Valve body repair or replacement
    • Control solenoid valve assembly replacement
    • TCM software/calibration update
    • Any service in response to a shift quality concern
  14. Perform the Transmission Adaptive Values Learn procedure. Refer to Transmission Adaptive Values Learn .