1. Gather Tools and Parts
- Replacement alternator belt (check owner's manual for the correct size)
- Wrench
- Socket wrench and set of sockets
- Pliers
- Safety glasses
2. Safety Precautions
- Park your vehicle on a level surface and apply the parking brake.
- Turn off the engine and allow it to cool down completely.
- Disconnect the negative terminal of the battery to prevent accidental electrical shock.
3. Locate the Alternator Belt
- The alternator belt is usually located on the front of the engine, near the alternator.
- It is a flat, ribbed belt that runs between the alternator pulley and the crankshaft pulley.
4. Loosen the Belt Tensioner
- Locate the belt tensioner, which is a spring-loaded device that keeps the alternator belt tight.
- Use the appropriate wrench or socket wrench to loosen the belt tensioner. This will release tension on the belt.
5. Remove the Alternator Belt
- Once the belt tensioner is loose, you can remove the alternator belt by simply pulling it off the pulleys.
- Be careful not to let the belt fall into the engine compartment.
6. Inspect the Belt
- Inspect the removed belt for any signs of wear, damage, or cracking.
- Replace the belt if it shows signs of wear or damage.
7. Install the New Belt
- Position the new alternator belt around the alternator pulley and the crankshaft pulley.
- Make sure the belt is properly seated on all the pulleys.
8. Tighten the Belt Tensioner
- Use the wrench or socket wrench to retighten the belt tensioner.
- The belt should be tight, but not overly tight. Refer to the owner's manual for the recommended belt tension.
9. Reconnect the Battery
- Reconnect the negative terminal of the battery.
10. Test the Alternator Belt
- Start the engine and let it run for a few minutes.
- Check for any unusual noises or vibrations coming from the alternator belt area.
11. Re-check Belt Tension
- After a short drive, recheck the belt tension and adjust if necessary.
12. Clean Up
- Clean up any tools or equipment you used.
By following these steps, you can successfully replace the alternator belt on your 2001 GMC Yukon with a 5.3L engine and a 130 amp alternator.
