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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 236 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Repair Instructions >> Transmission Fluid Cooler Hose/Pipe Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the upper oil cooler line from the radiator.
  2. Raise the vehicle.
  3. If equipped with AWD, remove the engine protector shield. Refer to ENGINE PROTECTION SHIELD REPLACEMENT .
  4. Remove the lower cooler line from the radiator.
    Fig 1: Removing Upper & Lower Oil Cooler Lines
    G02424130Courtesy of GENERAL MOTORS CORP.

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

  5. Pull the plastic cap back from the quick connect fitting and down along the cooler line about two inches.
    Fig 2: Pulling Plastic Cap From Quick Connect Fitting
    G02424131Courtesy of GENERAL MOTORS CORP.
  6. 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 3: Pulling On Open End Of Retaining Ring Using Bent-Tip Screwdriver
    G02424132Courtesy of GENERAL MOTORS CORP.
  7. Remove the retaining ring from the quick connect fitting.
  8. Discard the retaining ring.
    Fig 4: Removing Retaining Ring From Quick Connect Fitting
    G02424133Courtesy of GENERAL MOTORS CORP.
  9. Pull the cooler line straight out from the quick connect fitting.
  10. 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.
  11. Remove the cooler lines from the retaining clip at the oil pan.
  12. Remove the cooler lines from the vehicle.
    Fig 5: Pulling Cooler Line From Quick Connect Fitting
    G02424134Courtesy of GENERAL MOTORS CORP.
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