GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2008 🢒 I-370 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E/4L70-E 🢒 Control and Shift Solenoids Replacement

Removal Procedure

    Object Number: 181573 Size: SH
  1. Remove the transmission oil pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement .

    2. Important: Do not remove the valve body for the following procedures. Removal of the 1-2 accumulator is necessary only if servicing the pressure control solenoid.

  2. Remove the 1-2 accumulator if necessary. Refer to Accumulator Assembly, Spacer Plate, and Gaskets .
  3. Disconnect the internal wiring harness electrical connectors from the following components:
    4. • Transmission fluid pressure switch (1)
    • 1-2 shift control solenoid (2)
    • 2-3 shift control solenoid (3)
    • Pressure control solenoid (4)
    • TCC PWM solenoid (5)
    • 3-2 control solenoid (6)

    Object Number: 298162 Size: SH
  4. Remove the pressure control solenoid retainer.
  5. Remove the pressure control solenoid.

    6. Object Number: 298169 Size: SH
  6. Remove the 1-2 and 2-3 shift solenoid retainers with a small screwdriver. Rotate the solenoids in the bores, if necessary, until the flat part of the retainers are visible.
  7. Remove the 1-2 and 2-3 shift solenoids.

    8. Object Number: 298167 Size: SH
  8. Remove the 3-2 control solenoid retainer with a small screwdriver. Rotate the solenoid in the bore, if necessary, until the flat part of the retainer is visible.
  9. Remove the 3-2 control solenoid.

Installation Procedure

    Object Number: 298167 Size: SH
  1. Install the 3-2 control solenoid.
  2. Install the 3-2 control solenoid retainer.

    3. Object Number: 298169 Size: SH
  3. Install the 1-2 and 2-3 shift solenoids.
  4. Install the 1-2 and 2-3 shift solenoid retainers.

    5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 298162 Size: SH
  5. Install the pressure control solenoid.

    6. Ensure that the electrical connection is facing downward.

  6. Install the pressure control solenoid retainer and retaining bolt.

    7. Tighten
    Tighten the pressure control solenoid retaining bolt to 11 N·m (97 lb in).


    Object Number: 181573 Size: SH
  7. Connect the internal wiring harness electrical connectors to the following components:
    8. • Transmission fluid pressure switch (1)
    • 1-2 shift control solenoid (2)
    • 2-3 shift control solenoid (3)
    • Pressure control solenoid (4)
    • TCC PWM solenoid (5)
    • 3-2 control solenoid (6)
  8. Install the 1-2 accumulator. Refer to Accumulator Assembly, Spacer Plate, and Gaskets .
  9. Install the transmission filter and oil pan. Refer to Automatic Transmission Fluid and Filter Replacement .

    10. 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.

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