General Steps (This is NOT a complete guide, consult a repair manual):
1. Safety First: Disconnect the negative battery cable. Work in a well-ventilated area. Use jack stands securely supporting the vehicle.
2. Drain the Engine Oil: This is crucial to minimize mess and oil spillage.
3. Remove the Oil Pan: This usually involves removing the skid plate (if equipped), loosening bolts around the perimeter of the oil pan, and carefully lowering it. Be prepared for oil residue.
4. Access the Oil Pump: Once the oil pan is removed, you'll have access to the oil pump. The exact procedure varies depending on the engine. You may need to remove the pickup tube and possibly other components to reach the oil pump.
5. Remove the Oil Pump: This step involves removing bolts and possibly a chain or belt that drives the pump. Take note of the order and position of everything you remove. Take pictures if needed.
6. Install the New Oil Pump: Ensure the new oil pump is correctly oriented and seated. Install it using the same procedure as removal, in reverse order.
7. Reinstall the Oil Pan: Clean the oil pan gasket surface thoroughly and install a new gasket. Carefully lower the oil pan and tighten the bolts to the manufacturer's specifications (found in your repair manual).
8. Refill with Oil: Use the correct type and amount of oil specified in your owner's manual.
9. Check for Leaks: After starting the engine, carefully inspect for any leaks around the oil pan and pump.
10. Check Oil Level: Check the oil level and add more if necessary.
Tools You Will Likely Need:
* Repair Manual Specific to Your 1999 Chevy Malibu Engine: Absolutely essential.
* Jack and Jack Stands: Essential for safety.
* Oil Drain Pan: To collect the old oil.
* Socket Set and Wrenches: Various sizes for removing bolts and nuts.
* Torque Wrench: Crucial for tightening bolts to the correct specifications.
* Pry Bar (possibly): May be needed to help remove the oil pan.
* New Oil Pump Gasket and/or Seal: Always replace these.
* New Oil Filter: Good practice to change while you're at it.
* New Engine Oil: The correct type and amount.
* Rags or Shop Towels: For cleaning up oil spills.
Disclaimer: This is a simplified overview. You should consult a repair manual specific to your 1999 Chevy Malibu's engine before attempting this repair. If you're not comfortable with this level of car repair, take it to a qualified mechanic. Improperly replacing the oil pump can cause serious engine damage.
