GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 CTS 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 5L40-E 🢒 1-2 Shift Solenoid Valve Replacement

Removal Procedure
  1. Remove the transmission fluid pan. Refer to Automatic Transmission Fluid and Filter Replacement .

    2. Object Number: 795919 Size: SH
  2. Disconnect the electrical wiring harness connector (2) from the 1-2 shift solenoid (1).

    3. Object Number: 795835 Size: SH
  3. Using a small screwdriver or pick, remove the 1-2 shift solenoid retainer from the control valve body.

    4. Object Number: 792793 Size: SH
  4. Remove the 1-2 shift solenoid (7) from the control valve body.
  5. Remove the O-ring seals (4-5) from the 1-2 shift solenoid (7) ONLY if the O-rings are cut or worn.

Installation Procedure

    Object Number: 792793 Size: SH
  1. Install new O-ring seals (4-5) to the 1-2 shift solenoid (7), if the O-rings were previously removed.
  2. Install the 1-2 shift solenoid (7) into the control valve body.

    3. Object Number: 795835 Size: SH
  3. Install the 1-2 shift solenoid retainer into the control valve body.

    4. Object Number: 795919 Size: SH
  4. Connect the electrical wiring harness connector (2) to the 1-2 shift solenoid (1).
  5. Install the transmission fluid pan. Refer to Automatic Transmission Fluid and Filter Replacement .

    6. 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.

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