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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> On-Vehicle Repair Instructions >> 2-4 Servo >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the 2 heat shield retaining bolts and the heat shield from the transmission.
  3. Remove the oil pan bolt below and to the left of the 2-4 servo cover.
  4. Install the J 29714-A  to the oil pan rail. See Special Tools .
  5. Fig 1: Compressing The Servo Cover Using J 29714-A
    GM14478Courtesy of GENERAL MOTORS CORP.
  6. Tighten the bolt on the J 29714-A  in order to compress the servo cover. See Special Tools .
  7. Fig 2: Removing The Servo Cover Ring
    GM642680Courtesy of GENERAL MOTORS CORP.
  8. Remove the servo cover retaining ring.
  9. Loosen the bolt on the J 29714-A  to release tension on the servo cover. See Special Tools .
  10. Fig 3: Removing The Servo Cover And O-Ring Seal
    GM645364Courtesy of GENERAL MOTORS CORP.
  11. Remove the servo cover and O-ring seal. If the cover is hung up on the seal, use a pick (2) to pull and stretch the seal (1) out of the groove. Cut and remove the O-ring seal before removing the cover.
  12. Fig 4: View Of 2-4 Servo
    GM642523Courtesy of GENERAL MOTORS CORP.
  13. Remove the 2-4 servo assembly from the transmission.
  14. Inspect the 4th apply piston, the 2-4 servo converter, 2nd apply piston, and the piston inner housing for the following defects:
    • Cracks
    • Scoring
    • Burrs and nicks