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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 833 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Repair Instructions >> Valve Body and Pressure Switch Replacement >> Removal Procedure

Removal Procedure

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  1. Ensure that removal of the valve body is necessary before proceeding.

    Important:  The following components can be serviced without removing the valve body from the transmission:

    • The torque converter clutch solenoid (1)
    • The pressure control solenoid (2)
    • The internal wiring harness (3)
    • The 2-3 shift solenoid (4)
    • The 1-2 shift solenoid (5)
    • The transmission fluid pressure manual valve position switch (6)
    • The 3-2 shift solenoid (7)
    • The torque converter clutch pulse width modulation (TCC PWM) solenoid (8)
    Fig 1: Removing Valve Body And Pressure Switch & Components
    G02111795Courtesy of GENERAL MOTORS CORP.
  2. Remove the fluid level indicator.
  3. Remove the transmission filter. Refer to AUTOMATIC TRANSMISSION FLUID/FILTER REPLACEMENT  .
  4. Disconnect the internal wiring harness electrical connectors from the following components:
    • The transmission fluid pressure manual valve position switch (1)
    • The 1-2 shift solenoid (2)
    • The 2-3 shift solenoid (3)
    • The pressure control solenoid (4)
    • The TCC PWM solenoid (5)
    • The 3-2 shift solenoid (6)
    Fig 2: Disconnecting Internal Wiring Harness Electrical Connectors
    G02111796Courtesy of GENERAL MOTORS CORP.
  5. Remove the fluid indicator stop bracket bolt (2).
  6. Remove the fluid indicator bracket (1).
    Fig 3: Removing Fluid Indicator Bracket & Bolt
    G02111797Courtesy of GENERAL MOTORS CORP.
  7. Remove the TCC PWM solenoid retainer (2) with a small screwdriver. Rotate the solenoid (1) in the bore, if necessary, until the flat part of the retainer (2) is visible.
  8. Remove the TCC PWM solenoid (1) in order to access the TCC solenoid bolts.
    Fig 4: Removing TCC PWM Solenoid & Retainer
    G02111798Courtesy of GENERAL MOTORS CORP.
  9. Remove the TCC solenoid bolts.
    Fig 5: Removing TCC Solenoid Bolts
    G02111799Courtesy of GENERAL MOTORS CORP.
  10. Remove the TCC solenoid (with O-ring seal) and wiring harness from the valve body.
  11. Reposition the harness to the side of the transmission case.
    Fig 6: Removing TCC Solenoid (With O-Ring Seal) & Wiring Harness
    G02111800Courtesy of GENERAL MOTORS CORP.
  12. Remove the valve body bolts which retain the transmission fluid pressure switch to the valve body.
  13. Remove the transmission fluid pressure switch.
    Fig 7: Removing Valve Body Bolts
    G02111801Courtesy of GENERAL MOTORS CORP.
  14. Inspect the transmission fluid pressure switch for damage or debris.
    Fig 8: Inspecting Transmission Fluid Pressure Switch For Damage
    G02111802Courtesy of GENERAL MOTORS CORP.
  15. Remove the manual detent spring bolt.
  16. Remove the manual detent spring.
  17. Inspect the manual detent spring for cracks or damage.
    Fig 9: Removing Manual Detent Spring & Bolt
    G02111803Courtesy of GENERAL MOTORS CORP.

    Important:  Keep the valve body level when lowering it from the vehicle. This will prevent the loss of checkballs located in the valve body passages.

  18. Remove the remaining valve body bolts.
  19. Carefully lower the valve body from the transmission case while simultaneously disconnecting the manual valve link.
    Fig 10: Lowering Valve Body From Transmission Case Carefully
    G02111804Courtesy of GENERAL MOTORS CORP.
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