However, if you're determined to do it yourself, here's a general outline. These steps are general and may vary slightly depending on the exact year and model of your Alero. Always consult a repair manual specific to your vehicle's year and model for precise instructions and diagrams. These manuals are often available online or at auto parts stores.
Tools You'll Need:
* New serpentine belt: Make sure you get the correct belt size for your vehicle. The size is usually printed on the old belt.
* Socket wrench set (metric): Various sizes will likely be needed.
* Wrench set (metric): For various bolts and possibly tensioner adjustments.
* Jack and jack stands: Essential for safe working conditions.
* Wheel chocks: For added safety.
* Ratchet and extensions: For reaching difficult-to-access fasteners.
* Pliers: Possibly needed to help maneuver the belt.
* Gloves: Protect your hands.
* Shop rags or paper towels: To clean up any grease or oil.
* Repair Manual: Absolutely crucial for specific instructions and torque specifications.
General Steps (Consult your repair manual for specifics):
1. Safety First: Park your Alero on a level surface, engage the parking brake, and use wheel chocks. Raise the vehicle using a jack and securely support it with jack stands. Never work under a vehicle supported only by a jack.
2. Locate the Serpentine Belt: Identify the serpentine belt routing around the various pulleys (crankshaft, alternator, power steering pump, A/C compressor, etc.). Take photos or carefully draw a diagram of the routing *before* removing the belt. This is crucial for reinstallation.
3. Locate the Tensioner: The serpentine belt tensioner is a mechanism that allows you to release tension on the belt, making it easier to remove and install. It will usually have a bolt or lever that needs to be loosened or moved to relieve tension.
4. Release Belt Tension: Using the appropriate wrench, carefully loosen the tensioner. This may require some force. Once tension is released, the belt should be able to slip off the pulleys.
5. Remove the Old Belt: Carefully guide the old belt off each pulley, following the reverse order of its routing.
6. Install the New Belt: Route the new belt onto the pulleys, carefully following the diagram or photos you made earlier. Make sure the belt is seated correctly on all pulleys.
7. Re-tension the Belt: Tighten the tensioner back to its proper position. The belt should be snug but not overly tight. Your repair manual will provide the correct tension specifications, or you may be able to use a belt tension gauge.
8. Check for Proper Routing: Double-check that the belt is correctly routed around all pulleys.
9. Lower the Vehicle: Carefully lower your vehicle back to the ground.
10. Test the System: Start the engine and listen for any squealing or unusual noises. Check for proper function of all components driven by the serpentine belt (alternator, power steering, A/C compressor, etc.).
Important Considerations:
* Tensioner: Some tensioners use a bolt, others a lever. Your manual will show you how to adjust it correctly. Incorrect tension can lead to premature belt wear or failure.
* A/C Compressor: If your car has air conditioning, be aware that the A/C compressor may be heavier and harder to maneuver.
* Torque Specifications: Always use the correct torque specifications for all bolts and fasteners as specified in your repair manual. Over-tightening can damage components.
This is a general guide only. Always consult your vehicle's repair manual for detailed instructions and diagrams. Failure to follow the correct procedure can result in damage to your engine or personal injury. If you're unsure about any step, it's best to seek professional help.
