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Home >> Hummer >> 2008 >> H3 Luxury, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> On-Vehicle Repair Information >> Control and Shift Solenoids Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 Isuzu i-290, 2008 GMC Canyon, and 2008 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Valve Body Electrical Connections
    GM181573Courtesy of GENERAL MOTORS CORP.
  1. Remove the transmission oil pan and filter. Refer to Automatic Transmission Fluid and Filter Replacement .
    2. IMPORTANT: Do not remove the valve body for the following procedures. Removal of the 1-2 accumulator is necessary only if servicing the pressure control solenoid.
  2. Remove the 1-2 accumulator if necessary. Refer to Accumulator Assembly, Spacer Plate, and Gaskets .
  3. Disconnect the internal wiring harness electrical connectors from the following components:
    • Transmission fluid pressure switch (1)
    • 1-2 shift control solenoid (2)
    • 2-3 shift control solenoid (3)
    • Pressure control solenoid (4)
    • TCC PWM solenoid (5)
    • 3-2 control solenoid (6)
    4. Fig 2: Locating Pressure Control Solenoid & Retainer
    GM298162Courtesy of GENERAL MOTORS CORP.
  4. Remove the pressure control solenoid retainer.
  5. Remove the pressure control solenoid.
    6. Fig 3: View Of 1-2 & 2-3 Shift Solenoids & Retainers
    GM298169Courtesy of GENERAL MOTORS CORP.
  6. Remove the 1-2 and 2-3 shift solenoid retainers with a small screwdriver. Rotate the solenoids in the bores, if necessary, until the flat part of the retainers are visible.
  7. Remove the 1-2 and 2-3 shift solenoids.
    8. Fig 4: View Of 3-2 Control Solenoid & Retainer
    GM298167Courtesy of GENERAL MOTORS CORP.
  8. Remove the 3-2 control solenoid retainer with a small screwdriver. Rotate the solenoid in the bore, if necessary, until the flat part of the retainer is visible.
  9. Remove the 3-2 control solenoid.
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