Tools Required

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

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Support the transmission with a suitable jack.
3. Remove the transmission support. Refer to Transmission Support Replacement .
4. Remove the front exhaust pipe assembly. Refer to Catalytic Converter Replacement (LL8) or Catalytic Converter Replacement (LH6/LS2) .
5. Remove the heat shield if equipped. Refer to Transmission 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 .
8. Tighten the bolt in order to compress the servo cover.
Fig 2: Removing The Servo Cover Ring
Courtesy of GENERAL MOTORS CORP.
9. Remove the servo cover retaining ring.
10. Remove the J 29714-A  . See Special Tools .
Fig 3: Removing Servo Cover & 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