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Home >> Cadillac >> 2008 >> Escalade AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 105 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Valve Body and Pressure Switch Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Valve Body Electrical Components
    GM669475Courtesy of GENERAL MOTORS CORP.
  1. Ensure that removal of the valve body is necessary before proceeding.

    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)
  2. Remove the fluid level indicator.
  3. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement .
    4. Fig 2: Identifying Valve Body Electrical Connections
    GM181573Courtesy of GENERAL MOTORS CORP.
  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)
    5. Fig 3: View Of TCC PWM Solenoid & Retainer
    GM670428Courtesy of GENERAL MOTORS CORP.
  5. 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.

  6. Remove the TCC PWM solenoid (1) in order to access the TCC solenoid bolts.
    7. Fig 4: View Of TCC Solenoid Retaining Bolts
    GM670430Courtesy of GENERAL MOTORS CORP.
  7. Remove the TCC solenoid bolts.
    8. Fig 5: View Of TCC Solenoid & Wiring Harness
    GM71463Courtesy of GENERAL MOTORS CORP.
  8. Remove the TCC solenoid (with O-ring seal) and wiring harness from the valve body.
  9. Reposition the harness to the side of the transmission case.
    10. Fig 6: View Of Transmission Fluid Pressure Switch & Bolts
    GM29454Courtesy of GENERAL MOTORS CORP.
  10. Remove the valve body bolts which retain the transmission fluid pressure switch to the valve body.
  11. Remove the transmission fluid pressure switch.
    12. Fig 7: Inspection Areas On Transmission Fluid Pressure (TFP) Manual Valve Position Switch Assembly
    GM829178Courtesy of GENERAL MOTORS CORP.
  12. Inspect the transmission fluid pressure manual valve position switch assembly for the following conditions:
    • Damage
    • Debris
    • Damaged or missing O-rings
    • Cracked connector
    • Loose electrical terminals
    • Poor terminal retention
    13. Fig 8: Identifying Manual Detent Spring
    GM71461Courtesy of GENERAL MOTORS CORP.
  13. Remove the manual detent spring bolt.
  14. Remove the manual detent spring.
  15. Inspect the manual detent spring for cracks or damage.
    16. 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.
  16. Remove the remaining valve body bolts.
    17. Fig 9: View Of Valve Body To Transmission Case
    GM678315Courtesy of GENERAL MOTORS CORP.
  17. Carefully lower the valve body from the transmission case while simultaneously disconnecting the manual valve link.
    18. Fig 10: Locating Valve Body Check Balls
    GM676923Courtesy of GENERAL MOTORS CORP.
  18. Remove the 7 valve body checkballs.
    19. Fig 11: View Of 1-2 Accumulator Cover/Pin Assembly & Bolts
    GM828119Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Some models do not have an outer spring. Note spring usage during removal.
  19. Remove the accumulator cover bolts (58, 59).
  20. Remove the 1-2 accumulator cover and pin assembly (57).
    21. Fig 12: View Of Spacer Plate Support & Bolts
    GM5452Courtesy of GENERAL MOTORS CORP.
  21. Remove the spacer plate support bolts (77).
  22. Remove the spacer plate support (53).
    23. Fig 13: Valve Body Spacer Plate
    GM1887647Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Do not reuse the bonded spacer plate. Replace with a NEW bonded spacer plate.
  23. Remove the bonded valve body spacer plate (48), discard and do not reuse.
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