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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 356 (Automatic Transmission Servicing) >> Removal & Installation >> 2-4 Servo >> Removal

2-4 Servo: Removal

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Tools required: Servo Cover Depressor (J-29714-A).
  1. Raise and support the vehicle.
  2. Support the transmission with a suitable jack.
  3. Remove the transmission support. See TRANSMISSION SUPPORT  .
  4. Remove the front exhaust pipe assembly.
  5. Remove the heat shield. See Fig 1 .
  6. Carefully lower the transmission to gain access to the 2-4 servo.
  7. Install the servo cover depressor.
  8. Tighten the bolt on the servo cover depressor to compress the servo cover. See Fig 2 .
  9. Remove the servo cover retaining ring. See Fig 3 .
  10. Remove the servo cover depressor.
  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. See Fig 4 . Cut and remove the "O" ring seal before removing the cover.
  12. Remove the 2-4 servo assembly from the transmission.
  13. Inspect the 4th apply piston, the 2-4 servo cover, 2nd apply piston, and the piston inner housing for cracks, scoring, burrs and nicks. See Fig 5 .
Fig 1: Removing & Installing Heat Shield
G00094577Courtesy of GENERAL MOTORS CORP.
Fig 2: Installing Servo Cover Depressor To Transmission
G92J12574Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing Servo Cover Retaining Ring
G00089865Courtesy of GENERAL MOTORS CORP.
Fig 4: Removing Servo "O" Ring
G00089866Courtesy of GENERAL MOTORS CORP.
Fig 5: Inspecting Servo Components For Damage
G00089867Courtesy of GENERAL MOTORS CORP.
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