Installation Procedure

Important:  A distinct snap should be heard when assembling tube ends of the hose assembly to quick connectors. To ensure tube is fully inserted into the connector, check by giving 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.
   3. 1.3. Install the oil cooler hose bracket bolt. Tighten the bolt to 50 N.m (37 lb ft).
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 the bolts to 12 N.m (106 lb in).
   3. 2.3. Install the oil cooler hose bracket bolt (1).

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

3. If equipped, install the engine shield.
4. Install the engine shield bolts. Tighten the bolts to 20 N.m (15 lb ft).
5. Do not install the new retaining clip onto the fitting by pushing on the clip.

   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.
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.
10. If equipped with a 6.0L engine, perform the following:
    1. 10.1. Install the oil cooler hoses to the hose clip on the fan shroud.
    2. 10.2. Snap the oil cooler hose clip shut.

    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 on to the cooler line prior to cooler line installation.
    • Do not use the plastic cap in order to install the cooler line into the fitting.
11. If equipped with a 8.1L engine, perform the following:
    1. 11.1. Install the oil cooler hoses to the clip.
    2. 11.2. 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. 11.3. 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.

12. Snap the plastic cap onto the quick connect fitting.
13. Ensure that the plastic cap is fully seated against the fitting.
    Fig 1: Quick Connect Fitting

    Courtesy of GENERAL MOTORS CORP.
14. Ensure that no gap is present between the cap and the fitting.
    Fig 2: Checking Gap In Quick Connect Fitting

    Courtesy of GENERAL MOTORS CORP.
15. Ensure that the yellow identification band on the tube is hidden within the quick connect fitting. A hidden yellow identification band indicates proper joint seating.
16. Run the engine. Inspect the engine oil cooling system for leaks.
17. Inspect the engine oil level. Add oil if necessary.