Removal Procedure

Tools Required 

J 29714-A  Servo Cover Depressor. See Special Tools and Equipment .

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General information.
2. Support the transmission with a suitable jack.
3. Remove the transmission support. Refer to Transmission Support Replacement in Frame and Underbody.
4. Remove the front exhaust pipe assembly. Refer to Catalytic Converter Replacement (4.2L Engine) or Catalytic Converter Replacement (5.3L Engine) in Engine Exhaust.
5. Remove the heat shield if equipped. Refer to Heat Shield Replacement  .
6. Carefully lower the transmission to gain access to the 2-4 Servo.
Fig 1: Compressing The Servo Cover Using J 29714-A
Courtesy of GENERAL MOTORS CORP.
7. Install the J 29714-A  . See Special Tools and Equipment .
8. Tighten the bolt in order to compress the servo cover.
Fig 2: View Of Servo Cover Ring
Courtesy of GENERAL MOTORS CORP.
9. Remove the servo cover retaining ring.
10. Remove the J 29714-A  . See Special Tools and Equipment .
Fig 3: Servo Cover And O-Ring Seal
Courtesy of GENERAL MOTORS CORP.
11. Remove the servo cover and the 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.
Fig 4: View Of 2-4 Servo
Courtesy of GENERAL MOTORS CORP.
12. Remove the 2-4 servo from the transmission.
13. Inspect the 4th apply piston, 2-4 servo converter, 2nd apply piston, and the servo piston inner housing for the following defects.
    • Cracks
    • Scoring
    • Burrs and nicks