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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 4L60-E/4L65-E (Service & Replacement) >> Repair Instructions >> Transmission Oil Cooler Line Quick Connect Fitting >> Removal Procedure

Removal Procedure

Important:  Perform the following procedures when removing the retaining ring and cooler line from the quick connect fitting on the radiator and transmission.

  1. Pull the plastic cap back from the quick connect fitting and down along the cooler line about two inches.
  2. Using a bent-tip screwdriver, pull on one of the open ends of the retaining ring in order to rotate the retaining ring around the quick connect fitting until the retaining ring is out of position and can be completely removed.
    Fig 1: Bent-Tip Screwdriver
    G01565841Courtesy of GENERAL MOTORS CORP.
  3. Remove the retaining ring from the quick connect fitting.
    Fig 2: Removing Retaining Ring From Quick Connect Fitting
    G01565842Courtesy of GENERAL MOTORS CORP.
  4. Discard the retaining ring.
  5. Pull the cooler line straight out from the quick connect fitting.
    Fig 3: Pulling Cooler Line Straight Out From Quick Connect Fitting
    G01565843Courtesy of GENERAL MOTORS CORP.


  1. Raise the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General information.
  2. Remove the transmission heat shield. Refer to HEAT SHIELD REPLACEMENT .
  3. Place a drain pan under the vehicle.
  4. Remove the oil pan bolt below and to the left of the 2-4 servo cover.
  5. Install the J 29714-A  to the oil pan rail.
    Fig 1: Installing J 29714-A To Oil Pan Rail & Tightening Bolt
    G01565854Courtesy of GENERAL MOTORS CORP.
  6. Tighten the bolt on the J 29714-A  in order to compress the servo cover.
  7. Remove the servo cover retaining ring.
    Fig 2: Servo Cover Retaining Ring
    G01565855Courtesy of GENERAL MOTORS CORP.
  8. Loosen the bolt on the J 29714-A  to release tension on the servo cover.
  9. 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.
    Fig 3: Pulling & Stretching Seal Out Of Groove Using Pick
    G01565856Courtesy of GENERAL MOTORS CORP.
  10. Remove the 2-4 servo assembly from the transmission.
    Fig 4: Removing 2-4 Servo Assembly From Transmission
    G01565857Courtesy of GENERAL MOTORS CORP.
  11. 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