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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1625 (Automatic Transmission - 4L60-E - Service, Removal & Installation) >> Repair Instructions >> Valve Body and Pressure Switch Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  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 Components
      G01953594Courtesy 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: Internal Wiring Harness Electrical Connectors
      G01953595Courtesy 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
    G01953596Courtesy 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
    G01953597Courtesy of GENERAL MOTORS CORP.
  9. Remove the TCC solenoid bolts.
    Fig 5: Removing TCC Solenoid Bolts
    G01953598Courtesy 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 & Wiring Harness From Valve Body
    G01953599Courtesy 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 Transmission Fluid Pressure Switch & Valve Body Bolts
    G01953600Courtesy of GENERAL MOTORS CORP.
  14. Inspect the transmission fluid pressure switch for damage or debris.
    Fig 8: Inspecting Transmission Fluid Pressure Switch
    G01953601Courtesy 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
    G01953602Courtesy 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: Removing Valve Body & Bolts
    G01953603Courtesy of GENERAL MOTORS CORP.
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