Tools You'll Need:
* New AC belt: Make sure you get the correct size and type. Your owner's manual or a parts store can help you identify the correct belt.
* Socket wrench set: You'll likely need various sizes, including those for the tensioner pulley.
* Wrench set: May be needed depending on your tensioner design.
* Ratchet: To work with the socket wrench.
* Gloves: To protect your hands.
* Jack and jack stands (optional but recommended): Makes working under the vehicle safer.
* Shop rag or paper towels: To clean up any spilled fluids.
* Vehicle repair manual: Essential for accurate routing and tensioner specifics.
General Steps (Always Refer to Your Manual):
1. Safety First: Park the Suburban on a level surface, engage the parking brake, and chock the wheels. If you jack it up, use jack stands to support the vehicle securely. Disconnect the negative battery terminal to prevent electrical shorts.
2. Locate the AC Belt: Identify the AC belt and its routing around the crankshaft pulley, alternator, AC compressor, and other pulleys. Take a picture or carefully sketch the belt routing before removing it. This is crucial for reinstallation.
3. Release Belt Tension: This is the most crucial and engine-specific step. There are usually two common methods:
* Tensioner Pulley: Most Suburbans use a tensioner pulley with a bolt or lever. You'll need to use a socket wrench or wrench to loosen this pulley, releasing tension on the belt. The tensioner pulley usually pivots, allowing you to slip the belt off. Your repair manual will show exactly how to access and operate the tensioner.
* Idler Pulley: Some older models might use an idler pulley that needs to be loosened.
4. Remove the Old Belt: Once the tension is released, carefully remove the old AC belt.
5. Install the New Belt: Carefully route the new AC belt around the pulleys following the routing you documented or the diagram in your repair manual. Make sure it's seated correctly on all the pulleys.
6. Release Tensioner (reverse of step 3): Once the belt is properly routed, slowly tighten the tensioner pulley bolt (or lever) until the tension is restored.
7. Check Belt Tension: Manually check the belt tension. It should have a slight give but not be overly loose or too tight.
8. Reconnect Battery: Reconnect the negative battery terminal.
9. Test the AC: Start the engine and test your AC system to ensure the belt is functioning correctly.
Important Considerations:
* Belt Routing: Incorrect routing can damage the belt and other components. This is why referencing your repair manual is essential.
* Tension: Improper tension can lead to premature belt wear or failure.
* Pulley Condition: While you're in there, inspect the pulleys for cracks, damage, or excessive wear. Replace them if necessary.
* Other Belts: If other serpentine belts look worn or cracked, consider replacing them at the same time to save time and labor.
Again, this is a general guide. Consult your vehicle's repair manual for the precise procedures for your specific 2000 Suburban model and engine. Failure to follow the correct procedures could result in injury or damage to your vehicle. If you are uncomfortable performing this repair yourself, take it to a qualified mechanic.
