Safety First:
* Disconnect the negative battery terminal: This prevents accidental shorts and electrical shocks.
* Cool down the engine: Never work on a hot engine. Allow it to cool completely before beginning.
* Use jack stands: Never work under a vehicle supported only by a jack. Use jack stands for safety.
* Wear safety glasses: Broken parts can fly.
Tools You'll Need:
* New serpentine belt: Make sure you get the correct belt for your specific year and engine. The belt number is usually printed on the old belt and in your owner's manual.
* Wrench(es): The sizes needed will depend on your specific vehicle. You'll likely need wrenches to loosen the tensioner pulley(s).
* Socket set: Helpful for easier access to some bolts.
* Ratchet: To turn wrenches and sockets.
* Gloves: To protect your hands.
* Pliers or needle-nose pliers: May be necessary depending on the tensioner design.
* Shop rag or towels: To clean up any spills or grease.
General Steps (Consult your vehicle's repair manual for specifics):
1. Locate the serpentine belt: It's the long belt running around various pulleys in your engine bay.
2. Identify the tensioner pulley: This pulley is used to create slack in the belt so you can remove it. It will typically have a bolt or a lever that you need to loosen or move to release tension. This is crucial - the tensioner's location and operation vary significantly between models and years. Your owner's manual or a repair manual is essential here.
3. Release belt tension: Using the appropriate wrench or tool, carefully loosen the tensioner pulley. This will create enough slack to allow you to remove the belt from around the pulleys.
4. Remove the old belt: Carefully guide the belt off the pulleys. Work your way around, making sure it comes off each pulley smoothly.
5. Install the new belt: Carefully route the new belt around the pulleys in the same order as the old one. Make sure it sits correctly in the grooves of each pulley.
6. Release tensioner and tighten: Once the new belt is fully installed, carefully tighten the tensioner pulley back to its original position.
7. Check belt alignment and tension: Ensure the belt is correctly aligned and doesn't appear too loose or too tight. If you can twist it more than 90 degrees by hand, it's too loose.
8. Reconnect the negative battery terminal.
9. Start the engine: Listen for any unusual noises. If everything sounds right, let the engine run for a few minutes to check for problems.
Important Notes:
* Consult a repair manual: A repair manual specific to your year and model Pontiac Montana is highly recommended. This will provide detailed diagrams, torque specifications, and specific instructions for your vehicle. Don't rely solely on generic instructions.
* Diagram: Find a diagram of your serpentine belt routing online or in your manual. This will help you install the new belt correctly.
* Torque specifications: Tighten bolts to the manufacturer's specified torque. Over-tightening can damage components.
* If you're unsure: If you're not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic.
This information is for general guidance only. Improper repair can lead to damage to your vehicle. Always consult your vehicle's repair manual for specific instructions and safety precautions.
