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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Torque Converter Clutch Valve and Spring Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the transmission filter. Refer to Automatic Transmission Fluid and Filter Replacement .
    2. Fig 1: View Of TCC PWM Solenoid & Retainer
    GM298154Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the torque converter clutch (TCC) pulse width modulation (PWM) solenoid electrical connector.
  3. Remove the TCC PWM solenoid retainer.
  4. Remove the TCC PWM solenoid in order to access the TCC control solenoid bolts.
    5. Fig 2: View Of TCC Solenoid & Wiring Harness
    GM71463Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the TCC control solenoid connector.
  6. Remove the TCC control solenoid retaining bolts.
  7. Remove the TCC control solenoid.
    8. Fig 3: View Of Valve Bore Plug Retainer Ring & Reverse Boost Valve Bushing Retainer Ring
    GM102558Courtesy of GENERAL MOTORS CORP.
    CAUTION: Valve springs can be tightly compressed. Use care when removing retainers and plugs. Personal injury could result.
  8. Remove the TCC valve retainer ring (1).
    9. Fig 4: TCC Valve Assembly
    GM43320Courtesy of GENERAL MOTORS CORP.
  9. Remove the following parts:
    • The valve bore plug
    • The TCC valve
    • The TCC valve spring(s)
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