Tools You'll Need:
* New serpentine belt: Make sure you get the correct belt size for your specific year and model. A local auto parts store can help you find the right one.
* Socket wrench set: You'll need various sizes, likely including a 13mm and 15mm.
* Ratchet: A comfortable ratchet will make things easier.
* Wrench (optional): Depending on your access, a wrench might be helpful in addition to the sockets.
* Jack and jack stands (strongly recommended): This provides easier access and a safer working environment.
* Wheel chocks: Essential for safety when using a jack.
* Gloves: Protect your hands from grease and dirt.
* Shop rags or paper towels: For cleaning up spills.
* Pliers or needle-nose pliers (possibly): May be needed to help route the belt.
Steps:
1. Safety First: Park your Grand Prix on a level surface, engage the parking brake firmly, and use wheel chocks. Jack up the front of the car and securely support it with jack stands.
2. Locate the Serpentine Belt: The serpentine belt runs around the crankshaft pulley, water pump, alternator, power steering pump, and other accessories.
3. Identify the Belt Tensioner: There's a tensioner pulley that allows you to loosen the belt. This is usually a spring-loaded pulley.
4. Loosen the Tensioner: Use the correct socket (often a 13mm or 15mm) to loosen the tensioner. You'll need to apply pressure to the tensioner to release the tension on the belt. Some tensioners are accessed from the top; others, from below. Refer to your repair manual for the correct way to access and engage your tensioner. Be careful – the tensioner is spring-loaded and can spring back quickly. Have the new belt ready before releasing the tension.
5. Remove the Old Belt: Once the tension is released, the belt should slip off the pulleys. Work it off one pulley at a time.
6. Install the New Belt: Carefully route the new belt around all the pulleys in the correct order. Make sure it sits correctly in the grooves of each pulley. This is often the most challenging part. Refer to a diagram or the old belt for the correct routing.
7. Tighten the Tensioner: Once the belt is in place, release the tensioner slowly. The belt should now be properly tensioned.
8. Check the Belt Tension: Use your thumb to press on the longest span of the belt. There should be a slight give, not a significant amount of deflection. Consult your repair manual for the correct tension specifications.
9. Lower the Vehicle: Carefully lower the car using the jack.
10. Test: Start the engine and check for any squealing or slipping from the belt. Inspect the belt for proper routing and tension.
Important Considerations:
* Repair Manual: A Haynes or Chilton repair manual for your specific year and model is invaluable. It will have diagrams, torque specifications, and step-by-step instructions specific to your Grand Prix.
* Tensioner Type: Tensioners can vary slightly between years. Your manual will show the exact design for your car. Some require a specific tool to release the tension; others can be manually manipulated.
* Belt Routing: The correct routing of the belt is critical. A misrouted belt can cause damage to the engine. Take your time and double-check everything.
* Safety: Always prioritize safety. Use jack stands, chock the wheels, and be aware of moving parts.
If you're not comfortable performing this repair yourself, take it to a qualified mechanic. A poorly installed belt can lead to serious engine damage.
