Engine Oil Control Valve: Service and Repair

Oil Pressure Relief Valve Replacement

Removal Procedure




1. Open the hood.
2. Remove the oil fill cap.
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
4. Remove the oil pan drain plug (430) and O-ring (429).
5. Allow the oil to drain into an appropriate container.




6. Remove the engine oil filter (437). Allow the rest of the engine oil to drain into an appropriate container.




7. Remove the oil pan cover bolts.
8. Remove the valve lifter oil pressure relief valve (455).

Installation Procedure




1. Install the valve lifter oil pressure relief valve (455).




2. Inspect the valve lifter oil pressure relief valve for proper operation. Lightly depress the valve (2). The valve spring (1) should seat the valve to the proper closed position.

Notice: Refer to Fastener Notice.

3. Install the oil pan cover bolts and cover.

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




4. Install a NEW engine oil filter (437).




5. Install the oil pan drain plug (430) and O-ring (429).
6. Lower the vehicle.
7. Fill the engine with the appropriate amount and type of NEW engine oil. Refer to Capacities - Approximate Fluid and Fluid and Lubricant Recommendations.
8. Check the oil level.
9. Install the oil fill cap.
10. Open the hood.
11. Reset the engine oil lift monitor, if necessary. Refer to GM Oil Life System Resetting. Service and Repair