Tools You'll Likely Need:
* Socket set and wrenches: Various sizes, likely including 13mm, 15mm, and possibly others depending on your specific tensioner.
* Ratchet and extensions: For reaching hard-to-access bolts.
* Wrench or socket for the belt tensioner: This is crucial and the specific tool depends on your Tahoe's tensioner design (some use a lever, others require a specific tool).
* New serpentine belt: Make sure you get the correct belt size for your 2002 Tahoe. Check your owner's manual or auto parts store for the correct part number.
* Gloves: Protect your hands.
* Jack and jack stands (optional but recommended): For easier access, especially the bottom of the engine bay. Always use jack stands for safety; never work under a vehicle supported only by a jack.
Steps:
1. Safety First: Disconnect the negative battery cable. This prevents accidental shorts and electrical damage.
2. Locate the Tensioner: The serpentine belt tensioner is a pulley with a mechanism to release tension on the belt. On most Tahoes, it's near the front of the engine. Identify this mechanism. Some use a lever you can rotate, others might need a special tensioner tool. Your repair manual will show you exactly where it is and how it works.
3. Release Belt Tension: This is the most crucial step. Use the appropriate tool (lever or tensioner tool) to release the tension on the serpentine belt. You'll need to carefully loosen the tensioner to create slack in the belt.
4. Remove the Old Belt: Once slack is created, carefully route the belt off the pulleys. Work your way around the engine, starting from one easily accessible pulley.
5. Install the New Belt: Route the new serpentine belt onto all the pulleys in the correct order, following the path of the old belt.
6. Release Tensioner: Release the tensioner only AFTER the new belt is fully seated on all the pulleys.
7. Reconnect the Battery: Reconnect the negative battery cable.
8. Check for Proper Tension: After installation, check the belt tension. It should have a slight give, not be overly loose or tight. Consult your repair manual for specific instructions on checking tension.
9. Test Run: Start your engine and check for any squealing or other unusual noises.
Important Considerations:
* Diagram: Use a diagram from your repair manual or an online resource specific to your 2002 Tahoe to ensure you route the new belt correctly. Incorrect routing can lead to belt failure and potential engine damage.
* Tensioner Tool: Some tensioners require a special tool. You might be able to rent one from an auto parts store. Improvising can damage the tensioner.
* Broken Components: If you find any damaged pulleys or other components while replacing the belt, address these issues before starting the engine.
Again, I strongly recommend consulting a repair manual specific to your 2002 Chevy Tahoe. This will provide detailed instructions, diagrams, and torque specifications crucial for a successful repair. If you're not comfortable performing this repair yourself, take it to a qualified mechanic.
