Oil Reservoir: Service and Repair

Oil Tank Replacement (w/o LS9)

Removal Procedure

1. Remove the hood stop bracket to oil tank bolt.





Note:
Prior to the disconnecting the PCV tubes from the oil tank, mark the port locations to the proper tubes or they can be installed incorrectly.

2. Disconnect the positive crankcase ventilation (PCV) fresh air tube from the front port on the oil tank.





3. Disconnect the PCV dirty air tube from the rear port on the oil tank.

4. Remove the 2 oil tank middle bracket nuts.

5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle Service and Repair.

6. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement (6.2L) Service and RepairEngine Oil and Oil Filter Replacement (6.2L LS9 and 7.0L LS7) Service and Repair.

7. Remove the right front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Removal and Replacement.

8. Remove the right front wheelhouse rear liner. Refer to Front Wheelhouse Liner Replacement (Rear Liner) Front Wheelhouse Liner Replacement (Front Liner) .





9. Disconnect the oil temperature sensor electrical connector.





Note:
Anytime the oil tank inlet and outlet hoses are serviced, the oil seals must be replaced.

10. Remove the inlet hose to oil tank bolt (3) and disconnect the hose (2) from the oil tank. Discard the oil seal (1).





11. Remove the outlet hose to oil tank bolt (3) and disconnect the hose (2) from the oil tank. Discard the oil seal (1).

12. Remove the oil tank to frame bolts.

13. Remove the oil tank from the bottom of the vehicle.

Installation Procedure

Caution:
Refer to Engine Oil Cooler Debris Caution Engine Oil Cooler Debris Caution.

1. Position the oil tank in place from the bottom of the vehicle.

Caution:
Refer to Fastener Caution Fastener Caution.

2. Install the oil tank lower bracket to frame bolts and tighten to 36 Nm (27 lb ft).





3. Using a new oil seal (1), install the oil tank outlet hose (2) and bolt (3) to the oil tank. Tighten the outlet hose to oil tank bolt to 22 Nm (16 lb ft).





4. Using a new oil seal (1), install the oil tank inlet hose (2) and bolt (3) to the oil tank. Tighten the inlet hose to oil tank bolt to 22 Nm (16 lb ft).





5. Connect the oil temperature sensor electrical connector.

6. Install the right front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement (Rear Liner) Front Wheelhouse Liner Replacement (Front Liner) .

7. Install the right front tire and wheel assembly. Refer to Tire and Wheel Removal and Installation Removal and Replacement.

8. Lower the vehicle.

9. Install the 2 oil tank middle bracket nuts and tighten to 10 Nm (89 lb in).





10. Connect the PCV dirty air tube to the rear port on the oil tank.





11. Connect the PCV fresh air tube to the front port on the oil tank.

12. Install the hood stop bracket to oil tank bolt and tighten to 10 Nm (89 lb in).

13. Change the engine oil. Refer to Engine Oil and Oil Filter Replacement (6.2L) Service and RepairEngine Oil and Oil Filter Replacement (6.2L LS9 and 7.0L LS7) Service and Repair.