Tools You'll Need:
* New serpentine belt: Get the correct size and type; the part number should be in your owner's manual or easily found online using your vehicle's VIN.
* Socket wrench set: You'll need various sizes, likely including metric.
* Ratchet: A good quality ratchet is essential for efficient work.
* Wrench(es): Open-ended or combination wrenches may be needed to access certain bolts or tensioners.
* Jack and jack stands (crucial for safety): Always support the vehicle securely. Never work under a vehicle supported only by a jack.
* Wheel chocks: Place these on the wheels opposite the side you're working on.
* Gloves: Protect your hands.
* Penetrating oil (like PB Blaster): This can help loosen stubborn bolts. Apply it in advance if needed.
* Pliers or needle-nose pliers: May be needed to help route the belt.
* Shop rags or paper towels: For cleaning.
* Optional: Belt tensioner tool: Some tensioners require a specific tool, but often a long, sturdy wrench or even a breaker bar can suffice if you can gain leverage against the tensioner.
Procedure:
1. Safety First: Park on a level surface, engage the parking brake firmly, and chock the wheels. Raise the front of the vehicle with the jack and securely support it with jack stands. Consult your owner's manual for proper jacking points.
2. Locate the Serpentine Belt: Identify the serpentine belt. It's the long, ribbed belt that wraps around various pulleys (alternator, power steering pump, water pump, etc.).
3. Locate the Tensioner: Find the belt tensioner. This is a pulley with a mechanism (usually a spring or hydraulic) to create tension on the belt. This is the component you'll need to manipulate to loosen the belt.
4. Release Belt Tension: This is the trickiest part. The method varies depending on the tensioner design.
* Spring-loaded tensioner: You'll likely need to use a wrench or socket on a bolt or lever associated with the tensioner. Turn it to relieve the tension on the belt. You may need to use a pry bar or similar tool for leverage in some cases. Be extremely careful not to injure yourself or damage any parts.
* Hydraulic tensioner: Some systems use a hydraulic tensioner that may require a specific tool or careful manipulation with a wrench.
5. Remove the Belt: Once tension is released, carefully pry the belt off of the pulleys, starting at the tensioner pulley. Work your way around the pulleys.
6. Install the New Belt: Route the new belt around the pulleys in the same order as the old belt. Make sure it sits correctly in all the grooves. If unsure, check the routing diagram in your owner's manual or find a diagram online using your vehicle's year, make, model, and engine.
7. Release Tension (Again): If needed, re-apply tension (re-tighten the bolt or whatever your tensioner mechanism needs). This should help you position and place the belt over the final pulleys.
8. Check Belt Tension: Once the belt is in place, make sure there is proper tension. The belt should not be too loose or too tight. It should have a slight give when pressed with a thumb.
9. Lower the Vehicle: Carefully lower the vehicle using the jack.
10. Test Run: Start the engine and listen for any unusual noises. Check for belt slippage and proper functioning of all the components driven by the serpentine belt (alternator, power steering, etc.).
Important Considerations:
* Difficult Access: Some components might be difficult to reach due to the engine layout.
* Proper Tension: Incorrect tension can lead to premature belt wear or damage to other components.
* Diagram: Use a diagram for proper routing of the belt.
* Professional Help: If you are uncomfortable performing this task yourself, take your vehicle to a qualified mechanic.
This is a general guide; the specifics might vary slightly depending on your Suburban's engine and configuration. Always refer to your owner's manual for the most accurate instructions and safety precautions. If in doubt, seek professional help. Remember safety is paramount when working under your vehicle.
