Here's a general overview, but remember this is *not* a substitute for a proper repair manual:
Tools You'll Likely Need:
* Wrench set (metric): Various sizes, likely including 10mm, 13mm, 15mm, and possibly others.
* Socket set (metric) with ratchet: Again, various sizes matching the wrenches.
* Pliers: For electrical connections.
* Screwdrivers: Phillips and possibly flathead.
* Jack and jack stands: Essential for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: For added safety.
* Battery terminal cleaner: Recommended.
* New alternator: Ensure you get the correct one for your Cavalier's engine.
* Gloves and safety glasses: Protect yourself.
* Possibly a torque wrench: For precise tightening of bolts.
General Steps (Consult your repair manual for specifics):
1. Disconnect the Battery: This is CRUCIAL to prevent electrical shorts and injury. Disconnect the negative (-) terminal first, then the positive (+).
2. Access the Alternator: This usually involves removing some components to get to the alternator. This varies depending on the engine. You might need to remove:
* Air intake components: This is common.
* Serpentine belt: This is almost certainly necessary. You'll likely need a belt tensioner tool to release the tension on the belt before removing it.
* Possibly other components: Consult your repair manual to determine exactly what needs to be removed for your specific model.
3. Disconnect the Alternator:
* Electrical connections: Carefully disconnect the electrical wiring harness from the alternator. Take photos or make notes on how the wires are connected to ensure proper reconnection.
* Mounting bolts: Remove the bolts securing the alternator to the engine.
4. Remove the Alternator: Carefully remove the alternator from its mounting location. It can be heavy.
5. Install the New Alternator: Follow the steps in reverse order:
* Mount the new alternator: Secure it with the mounting bolts. Tighten to the proper torque specification (check your repair manual).
* Reconnect the electrical connections: Carefully connect the wiring harness, making sure everything matches the way it was before.
* Reinstall the serpentine belt: Use the belt tensioner tool to properly tension the belt.
* Reinstall any other components: Put back everything you removed earlier (air intake, etc.).
6. Reconnect the Battery: Connect the positive (+) terminal first, then the negative (-) terminal.
7. Test the Alternator: Start the engine and check if the battery voltage is charging properly (around 13.5-14.5 volts). You can use a multimeter to check this.
Important Considerations:
* Serpentine Belt Tensioner: This is a crucial part of the process and can be tricky. A proper tensioner tool is highly recommended. If you're not comfortable with this step, it's best to have a professional do it.
* Torque Specifications: Always use the correct torque specifications for all bolts. Over-tightening can damage components.
* Safety First: Always use jack stands, wheel chocks, and work in a well-ventilated area. Never work under a car supported only by a jack.
This is a general guide. The exact steps and tools required will vary depending on your specific 2003 Chevy Cavalier model and engine. Use a repair manual specific to your car for detailed instructions and diagrams. If you're unsure about any step, it's best to consult a qualified mechanic.
