GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Kodiak C-Series (Conventional) C4/C5 🢒 Preface 🢒 Dangers, Warnings, and Cautions 🢒 Engine Oil Cooler Hose/Pipe Replacement

Engine Oil Cooler Hose/Pipe Replacement 8.1L Engine

Removal Procedure

Note: Flush the oil cooler and replace the filter if the following conditions exist:

   • Foreign material is present in the oil cooler.
   • The engine is damaged internally.
        This action will prevent premature engine wear.


    Object Number: 104743 Size: SH
  1. Use a small pick-like tool in order to remove the cooler lines quick connector clip.

    2. Object Number: 209220 Size: SH
  2. Remove the cooler lines (2) from the engine oil cooler (1).
  3. Place a drain pan under the engine oil cooler line connectors.

    4. Object Number: 104743 Size: SH
  4. Use a small pick-like tool in order to remove the cooler line quick-connector clip.

    5. Object Number: 209201 Size: SH
  5. Remove the cooler line from the connector at the engine block.
  6. Remove the cooler line mounting clamps.
  7. Remove the engine oil cooler lines (2).

Installation Procedure

    Object Number: 209201 Size: SH
  1. Install the engine oil cooler lines (2) to the original routing.

    2. Object Number: 104746 Size: SH

    Caution: Make sure the connector clip engages all three slots in the connector. Failure to properly install the connector clip could cause the oil cooler line to come loose and cause damage to the engine.

  2. Use the following procedure in order to install the cooler line quick connector clip:
    3. 2.1. Use your thumb and your forefinger in order to insert the connector clip into one of the three recesses in the connector.
    2.2. When one end of the clip is engaged in the connector slot, use your thumb to rotate the clip around the connector until the clip snaps into place.

    Object Number: 209201 Size: SH
  3. Use the following procedure in order to install the cooler line (2) to the quick connector at the engine block:
    4. 3.1.  Fully insert the oil cooler line into the quick connector. You will hear a distinct snap when you assemble the oil cooler line to the quick connector.
    3.2. Pull the fitting forcefully in order to ensure full installation.

    Caution: Refer to Fastener Caution in the Preface section.

  4. Install the cooler line mounting clamps.

    5. Tighten
    Tighten the cooler line mounting bolts to 3 N·m (27 lb in).

  5. Install the engine oil cooler mounting bracket at the engine block.
  6. Install the engine oil cooler mounting bolts.

    7. Tighten
    Tighten the engine oil cooler mounting bolts to 15 N·m (11 lb ft).


    Object Number: 104746 Size: SH

    Caution: Make sure the connector clip engages all three slots in the connector. Failure to properly install the connector clip could cause the oil cooler line to come loose and cause damage to the engine.

  7. Use the following procedure in order to install the cooler line quick connector clip to the oil cooler:
    8. 7.1. Use your thumb and your forefinger in order to insert the connector clip into one of the three recesses in the connector.
    7.2. When one end of the clip is engaged in the connector slot, use your thumb in order to rotate the clip around the connector until the clip snaps into place.
  8. Use the following procedure in order to install the cooler line to the quick connector:
    9. 8.1.  Fully insert the oil cooler line into the quick connector.

    You will hear a distinct snap when you assemble the oil cooler line to the quick connector.

    8.2. Pull the fitting forcefully in order to ensure full installation.
  9. Install the engine oil cooler line mounting bracket to radiator support.
  10. Refill the engine to the correct level.
  11. Start the engine.
  12. Inspect the system for leaks.