Tools You'll Need:
* New alternator belt (make sure you get the correct size!)
* Socket wrench and appropriate sockets (probably a 13mm and 15mm, but check your car)
* Possibly a ratchet and extensions
* Possibly a belt tensioner tool (depending on your car; some can be adjusted by hand)
* Gloves (recommended)
Steps:
1. Locate the Alternator and Belt: Open the hood and locate the alternator. The belt will run around the alternator, crankshaft pulley (the largest pulley at the front of the engine), and possibly other pulleys (like the power steering pump and air conditioning compressor).
2. Identify the Belt Tensioner: Find the belt tensioner. This is a mechanism that allows you to loosen the belt to remove or install it. It might be a pulley with a pivoting arm, or it might have a different mechanism. This is crucial to understand before proceeding. Some Grand Ams require a specific tensioner tool; others allow you to loosen the belt manually.
3. Loosen the Belt Tensioner: This is the most important and potentially tricky step. If your Grand Am has a manual tensioner, you'll need to use a wrench (likely a 13mm or 15mm, but verify!) to turn the tensioner to relieve the tension on the belt. You may need to use a ratchet and extensions to reach the tensioner bolt. Turn the tensioner in the correct direction to release the tension—this will usually be counterclockwise but double-check your manual. If your car uses a different type of tensioner, carefully refer to your repair manual for instructions.
4. Remove the Old Belt: Once the tension is released, the belt should be loose enough to slip off the pulleys. Carefully work it off, starting from the loosest pulley.
5. Install the New Belt: Route the new belt onto the pulleys in the same order as the old belt. Make sure it sits correctly in the grooves of each pulley.
6. Tighten the Belt Tensioner: Once the new belt is in place, slowly tighten the tensioner bolt back to its original position. This will put tension on the new belt.
7. Check Belt Tension: After tightening the tensioner, check the belt tension. It should have a slight give when pressed firmly with your thumb. If it's too loose or too tight, adjust the tensioner accordingly. Refer to your repair manual for specifics on proper belt tension.
8. Start the Engine: Start the engine and listen for any squealing noises. If you hear squealing, the belt is likely too loose or misaligned. Turn the engine off immediately and re-check the belt.
Important Considerations:
* Consult your repair manual: This is crucial! The specific procedure and tools may vary depending on your exact Grand Am model and engine.
* Safety First: Always disconnect the negative battery terminal before working on any vehicle components.
* Correct Belt Size: Use a belt of the correct size. The wrong size will not work properly.
* Professional Help: If you are uncomfortable performing this repair, take your Grand Am to a qualified mechanic.
This is general guidance. Improper installation can lead to belt slippage, premature wear, or damage to other components. Always refer to your vehicle's repair manual for the correct procedure and specifications.
