Installation Procedure

Important:  A distinct snap should be heard when assembling the tube ends of the hose assembly to quick connectors. To ensure the tube is fully inserted into the connector, check by giving the tube a forceful pull.

1. If equipped with a 8.1L engine, perform the following:
   1. 1.1. Remove the oil cooler hose assembly.
   2. 1.2. Connect the quick connect fittings (1) at the engine.
      NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
   3. 1.3. Install the oil cooler hose bracket bolt.

      Tighten 

      Tighten the bolt to 50 N.m (37 lb ft).

   Fig 1: Connecting Quick Connect Fittings At Engine

   Courtesy of GENERAL MOTORS CORP.
2. If equipped with a 6.0L engine, perform the following:
   1. 2.1. Install the oil cooler hose assembly and a new gasket.
   2. 2.2. Install the oil cooler hose adapter bolts (2).

      Tighten 

      Tighten the bolts to 12 N.m (106 lb in).

   3. 2.3. Install the oil cooler hose bracket bolt (1).

      Tighten 

      Tighten the bolt to 25 N.m (18 lb ft).

   Fig 2: Installing Oil Cooler Hose Assembly

   Courtesy of GENERAL MOTORS CORP.
3. If equipped, install the engine shield.
4. Install the engine shield bolts.

   Tighten 

   Tighten the bolts to 20 N.m (15 lb ft).

   Fig 3: Installing Engine Shield

   Courtesy of GENERAL MOTORS CORP.
5. Do not install the new retaining clip onto the fitting by pushing on the clip.
   Fig 4: Identifying Wrong Method Of Installing Retaining Ring

   Courtesy of GENERAL MOTORS CORP.

   Important:  Failure to properly install the retaining clip could cause the cooler line to come loose and cause damage to the engine.

6. Install the NEW retaining clip into the quick connect fitting by using your thumb and forefinger. Insert the new retaining clip into one of the three fitting recesses. Ensure that the retaining clip is engaged in all 3 slots.
   Fig 5: Installing Retaining Clip Into Quick Connect Fitting

   Courtesy of GENERAL MOTORS CORP.
7. With one end of the retaining clip engaged in the connector fitting slot, use your thumb in order to rotate the retaining clip around the connector fitting, until the retaining clip snaps into place.
8. Ensure that the 3 retaining clip ears are seen from inside the fitting and that the retaining clip moves freely in the fitting slots.
9. Install a new retaining clip into the remaining quick connect fitting.
   Fig 6: Rotating Retaining Clip Around Connector Fitting

   Courtesy of GENERAL MOTORS CORP.
10. Install the pipe to the exhaust manifold.
11. Install the exhaust manifold pipe nuts.

    Tighten 

    Tighten the nuts to 50 N.m (37 lb ft).

12. Lower the vehicle.
    Fig 7: Installing Pipe To Exhaust Manifold

    Courtesy of GENERAL MOTORS CORP.
13. If equipped with a 6.0L engine, perform the following:
    1. 13.1. Install the oil cooler hoses to the hose clip on the fan shroud.
    2. 13.2. Snap the oil cooler hose clip shut.
    Fig 8: Installing Oil Cooler Hoses

    Courtesy of GENERAL MOTORS CORP.

    Important: 

    • Ensure the oil cooler line being installed has a plastic cap on the end that connects to the quick connect fitting. If no plastic cap exists, or the plastic cap is damaged, obtain a new cap. Install the cap onto the cooler line prior cooler line installation.
    • Do not use the plastic cap in order to install the cooler line into the fitting.
14. If equipped with a 8.1L engine perform the following:
    Fig 9: Installing Oil Cooler Lines To Radiator

    Courtesy of GENERAL MOTORS CORP.
    1. 14.1. Install the oil cooler hoses to the clip.
    2. 14.2. Install the oil cooler lines to the radiator. Install the cooler line straight into the quick connect fitting.

       Insert the cooler line end into the quick connect fitting until a click is either heard or felt.

    3. 14.3. Pull back sharply on the cooler line in order to ensure that the cooler line is installed in the quick connect fitting.

    Important:  Do not manually depress the retaining clip when installing the plastic cap.

15. Snap the plastic cap onto the quick connect fitting.
16. Ensure that the plastic cap is fully seated against the fitting.
    Fig 10: Sectional View Of Quick Connector

    Courtesy of GENERAL MOTORS CORP.
17. Ensure that no gap is present between the cap and the fitting.
    Fig 11: Checking Fitting For Gap

    Courtesy of GENERAL MOTORS CORP.