GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 CTS - RHD 🢒 Engine 🢒 Engine Controls - 2.6L and 3.2L 🢒 Torque Converter Clutch Solenoid Replacement

Removal Procedure
  1. Remove the transmission fluid pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement.
  2. Loosen, do not remove, the control valve body to transmission case bolts. Refer to Control Valve Body Accumulator Assembly Replacement.
  3. Continue to loosen the bolts until there is a gap of 6.35 mm (0.25 in) between the control valve body and the transmission case.

    4. This will allow for removal of the torque converter clutch (TCC) pulse width modulation (PWM) solenoid valve without completely removing the valve body from the transmission.


    Object Number: 795920 Size: SH
  4. Disconnect the electrical wiring harness connector (1) from the torque converter clutch (TCC) pulse width modulation (PWM) solenoid valve (2).

    5. Object Number: 795835 Size: SH
  5. Using a small screwdriver or pick, remove the TCC PWM solenoid valve retainer from the control valve body.

    6. Object Number: 792782 Size: SH
  6. Remove the TCC PWM solenoid valve (1) from the control valve body.
  7. Remove the O-ring seals (3-4) from the TCC PWM solenoid valve (1), ONLY if the O-rings are cut or worn.

Installation Procedure

    Object Number: 792782 Size: SH
  1. Install new O-ring seals (3-4) to the torque converter clutch (TCC) pulse width modulation (PWM) solenoid valve (1), if the O-rings were previously removed.
  2. Install the TCC PWM solenoid valve (1) into the control valve body.

    3. Object Number: 795835 Size: SH
  3. Install the TCC PWM solenoid valve retainer into the control valve body.

    4. Object Number: 795920 Size: SH
  4. Connect the electrical wiring harness connector (1) to the TCC PWM solenoid valve (2).

    5. Important: 

       • Use the proper tongue and tightening sequence when installing the valve body.
       • Confirm the manual shift shaft detent lever locating pin is properly engaged with the manual valve link.
       • Confirm the detent spring roller is properly engaged with the manual shift shaft switch.

  5. Tighten the control valve body bolts. Refer to Control Valve Body Accumulator Assembly Replacement.
  6. Install the transmission fluid pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement.

    7. Important: It is recommended that the transmission adaptive pressure (TAP) information be reset.

    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the ECM, PCM or TCM will need to relearn the TAP values. Transmission performance may be affected as new TAP values are learned.

  7. Reset the TAP values. Refer to Transmission Adaptive Functions.