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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 236 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Repair Instructions >> Valve Body and Pressure Switch Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. 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: Identifying Serviceable Components
    G02424175Courtesy of GENERAL MOTORS CORP.
  2. Remove the fluid level indicator.
  3. Raise the vehicle.
  4. Remove the oil pan, gasket, and filter. Refer to Automatic Transmission Fluid/Filter Replacement .
  5. Disconnect the internal wiring harness electrical connectors from the following components:
    • 1 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
    G02424176Courtesy of GENERAL MOTORS CORP.
  6. Remove the fluid indicator stop bracket bolt (2).
  7. Remove the fluid indicator bracket (1).
    Fig 3: Removing Fluid Indicator Stop Bracket Bolt & Bracket
    G02424177Courtesy of GENERAL MOTORS CORP.
  8. 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.
  9. Remove the TCC PWM solenoid (1) in order to access the TCC solenoid retaining bolts.
    Fig 4: Removing TCC PWM Solenoid Retainer & Solenoid
    G02424178Courtesy of GENERAL MOTORS CORP.
  10. Remove the TCC solenoid retaining bolts.
    Fig 5: Removing TCC Solenoid Retaining Bolts
    G02424179Courtesy of GENERAL MOTORS CORP.
  11. Remove the TCC solenoid (with O-ring seal) and wiring harness from the control valve body.
  12. Reposition the harness to the side of the transmission case.
    Fig 6: Removing TCC Solenoid & Wiring Harness
    G02424180Courtesy of GENERAL MOTORS CORP.
  13. Remove the control valve body bolts which retain the transmission fluid pressure switch to the control valve body.
  14. Remove the transmission fluid pressure switch.
    Fig 7: Removing Control Valve Body Bolts & Transmission Fluid Pressure Switch
    G02424181Courtesy of GENERAL MOTORS CORP.
  15. Inspect the transmission fluid pressure switch for damage or debris.
    Fig 8: Inspecting Transmission Fluid Pressure Switch
    G02424182Courtesy of GENERAL MOTORS CORP.
  16. Remove the manual detent spring retaining bolt.
  17. Remove the manual detent spring.
  18. Inspect the manual detent spring for cracks or damage.
    Fig 9: Removing Manual Detent Spring Retaining Bolt & Spring
    G02424183Courtesy of GENERAL MOTORS CORP.

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

  19. Remove the remaining control valve body bolts.
  20. Carefully begin to lower the control valve body down from the transmission case while simultaneously disconnecting the manual valve link.
    Fig 10: Lowering Control Valve Body & Disconnecting Manual Valve Link
    G02424184Courtesy of GENERAL MOTORS CORP.
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