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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Automatic Transmission Servicing (4L80-E)) >> Removal & Installation >> Oil Cooler Lines >> Removal

Oil Cooler Lines: Removal

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  1. Raise the vehicle. Support the vehicle with safety stands. Remove the 2 oil cooler lines from the radiator. See Fig 1 . If equipped with the auxiliary transmission oil cooler, remove the outlet pipe from the auxiliary cooler pipe.
  2. Remove the 2 oil cooler lines from the transmission. Remove the 2 oil cooler lines from the clips on the frame rail.
    NOTE: Perform the following procedures when removing the retaining ring and cooler line from the quick connect fitting on the transmission.
  3. Pull the plastic cap back from the quick connect fitting and down along the cooler line about two inches. See Fig 3 . 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.
  4. Remove the retaining ring from the quick connect fitting. See Fig 2 . Discard the retaining ring. Pull the cooler line straight out from the quick connect fitting.
  5. Remove the retaining ring (E-clips) securing the cooler line to the quick connect in order to remove the remaining cooler lines from the remaining quick connect fittings. Remove the cooler lines from the vehicle. Lower the vehicle.
Fig 1: Removing/Installing 2 Oil Cooler Lines From Radiator
G00211910Courtesy of GENERAL MOTORS CORP.
Fig 2: Removing Retaining Ring
G00088353Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing/Installing Cooler Line From Quick Connect Fitting
G00088354Courtesy of GENERAL MOTORS CORP.