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Oil Cooler Hose/Pipe (4T80-E): Installation

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Allow sufficient clearance around the transaxle oil cooler pipes and around the hoses to prevent damage or wear which may cause fluid loss.
  1. Position the lower transaxle oil cooler pipe into the engine compartment. Connect the lower transaxle oil cooler pipe to the radiator. See Figure .
    2. NOTE: Ensure the lower transaxle oil cooler pipe is positioned upwards while tightening.
  2. Tighten the transaxle oil cooler pipe fitting to specification. See TORQUE SPECIFICATIONS  . Connect the lower transaxle oil cooler pipe to the front of the transaxle utilizing one of the following methods. See Figure .
  3. If equipped with a threaded fitting, perform the following:
    • Hold the transaxle oil cooler pipe adapter in order to prevent the adapter from turning.
    • Install the transaxle oil cooler pipe to the oil cooler pipe adapter. Tighten the transaxle oil cooler pipe fitting to specification. See TORQUE SPECIFICATIONS  .
  4. If equipped with a quick connect fitting, perform the following:
    • Push the transaxle oil cooler pipe into the transaxle quick connect fitting, until a "CLICK" is heard.
    • Tug gently on the cooler pipe to ensure proper retention.
    • Slide the plastic cap over the quick connect fitting.
  5. Raise and support the vehicle. Position the upper transaxle oil cooler pipe in the proper location. See Figure . Install the upper transaxle oil cooler pipe retainers to the transaxle. Connect the upper transaxle oil cooler pipe to the rear of the transaxle utilizing one of the following methods.
  6. If equipped with a threaded fitting, perform the following:
    • Hold the transaxle oil cooler pipe adapter in order to prevent the adapter from turning.
    • Install the transaxle oil cooler pipe to the oil cooler pipe adapter. Tighten the transaxle oil cooler pipe fitting to specification. See TORQUE SPECIFICATIONS  .
  7. If equipped with a quick connect fitting, perform the following:
    • Push the transaxle oil cooler pipe into the transaxle quick connect fitting, until a "CLICK" is heard.
    • Tug gently on the cooler pipe to ensure proper retention.
    • Slide the plastic cap over the quick connect fitting.
  8. Install the rear exhaust manifold pipe. Lower the vehicle. Push the upper transaxle oil cooler pipe into the radiator quick connect fitting, until a "CLICK" is heard.
  9. Tug gently on the cooler pipe to ensure proper retention. Slide the plastic cap over the quick connect joint. See Fig 1 . Install the upper transaxle oil cooler pipe retaining bolt to the fan shroud. See Figure . Tighten the transaxle oil cooler pipe retaining bolt to specification. See TORQUE SPECIFICATIONS  .
    10. NOTE: DO NOT overfill the transaxle. Overfilling of the transaxle causes foaming, loss of fluid, shift complaints, and possible damage to the transaxle.
  10. Install the air cleaner assembly. Fill transaxle with appropriate fluid to proper level. See LUBRICATION  . Inspect for fluid leaks.
Fig 1: Installed View Of Quick Connect Fitting
G00088363Courtesy of GENERAL MOTORS CORP.
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