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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1612 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> 2-4 Servo >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Transmission Heat Shield Bolts & Shield
    GM394459Courtesy of GENERAL MOTORS CORP.
  1. Remove the catalytic converter pipe. Refer to Catalytic Converter Replacement (LY6 with Exhaust Flange) or Catalytic Converter Replacement (L9H with Exhaust Flange) or Catalytic Converter Replacement (Gen IV Engines with Exhaust Clamp) or Catalytic Converter Replacement (LFA with Exhaust Clamp) or Catalytic Converter Replacement (LMM) .
  2. Remove the heat shield bolts.
  3. Remove the heat shield.
  4. Support the transmission.
  5. Remove the transmission crossmember. Refer to Transmission Support Crossmember Replacement (2WD 1500/2500) or Transmission Support Crossmember Replacement (4WD 1500/2500) or Transmission Support Crossmember Replacement (2WD 2500 HD/3500) or Transmission Support Crossmember Replacement (4WD 2500 HD/3500) .
  6. Lower the transmission with a suitable jack.
    7. Fig 2: Compressing Servo Cover Using J 29714-A
    GM14478Courtesy of GENERAL MOTORS CORP.
  7. Remove the oil pan bolt below the servo.
  8. Install the J 29714-A  . See Special Tools .
  9. Tighten the bolt on J 29714-A  in order to compress the servo cover. See Special Tools .
    10. Fig 3: Removing Servo Cover Ring
    GM642680Courtesy of GENERAL MOTORS CORP.
  10. Remove the servo cover ring.
  11. Remove the J 29714-A  . See Special Tools .
    12. Fig 4: Servo Cover & O-Ring Seal
    GM645364Courtesy of GENERAL MOTORS CORP.
  12. Remove the servo cover and O-ring seal. If the cover is hung up on the seal, use a pick (2) in order to pull and stretch the seal (1) out of the groove. Cut and remove the O-ring seal before removing the cover.
    13. Fig 5: View Of 2-4 Servo
    GM642523Courtesy of GENERAL MOTORS CORP.
  13. Remove the 2-4 servo.
  14. 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
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