GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2001 🢒 Catera 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L30-E 🢒 Control Valve Body

Removal Procedure
  1. Remove the transmission oil pan and oil filter. Refer to Changing Fluid and Oil Filter .

    2. Object Number: 159640 Size: SH
  2. Disconnect the electrical connectors from the solenoid valves (1, 2).
  3. Remove the wiring harness connector from the transmission housing.
  4. Remove the wiring harness.

Installation Procedure
  1. Install the wiring harness.
  2. Install the wiring harness connector to the transmission housing.

    3. Object Number: 159640 Size: SH
  3. Connect the electrical connectors to the solenoid valves (1, 2).
  4. Install the transmission oil filter and the transmission oil pan. Refer to Changing Fluid and Oil Filter .

    5. Important: It is recommended that 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 TAP values. Transmission performance may be affected as new TAP values are learned.

  5. Reset the TAP values. Refer to Adapt Function.