1. Preparation:
* Disconnect the battery: This is crucial to prevent electrical shorts and potential damage to your vehicle's electrical system. Disconnect the negative (-) terminal first.
* Gather your tools: You'll likely need a Phillips head screwdriver, possibly a flathead screwdriver (for prying), a panel removal tool (plastic is best to avoid scratching), wire strippers/cutters, and possibly a soldering iron or crimp connectors (depending on how you connect the new speakers). Have your new speakers and any additional wiring harnesses ready.
* Consult a wiring diagram: Finding a wiring diagram specific to your 1999 Chevy Tahoe's rear speakers is highly recommended. This will help you identify the correct wires for positive (+), negative (-), and possibly other connections. You can often find these online through forums dedicated to Chevy Tahoes or through repair manuals.
2. Accessing the Speakers:
* Remove the rear side panels: The process for this varies depending on the trim level. Generally, you'll need to carefully pry off the panels using your panel removal tools. Start at the edges and work your way around, applying even pressure to avoid breaking clips. There might be screws hidden behind access panels, so be thorough in your inspection.
* Locate the speakers: Once the panels are removed, you should see the speakers mounted. They're usually held in place by screws.
3. Removing the Old Speakers:
* Disconnect the wiring: Carefully disconnect the speaker wires from the old speakers. Take note of which wire is positive and which is negative. Take pictures if necessary.
* Remove the mounting screws: Unscrew the speakers from the mounting brackets.
4. Installing the New Speakers:
* Mount the new speakers: Carefully mount the new speakers using the existing mounting holes and screws. Ensure they're securely fastened.
* Connect the wiring: Connect the speaker wires from your new speakers to the existing wiring harness. Again, ensure you match the positive (+) and negative (-) wires correctly. If the wiring is different (e.g., different connector types), you'll need to use crimp connectors or soldering to adapt the new speakers to your Tahoe's wiring.
* Test the speakers: Before fully reinstalling the panels, reconnect the battery and test the new speakers to ensure they're working correctly.
5. Reassembly:
* Reinstall the rear side panels: Carefully snap the panels back into place. Make sure all the clips are securely engaged.
* Reconnect the battery: Reconnect the positive (+) terminal of the battery.
Important Considerations:
* Speaker size: Before purchasing new speakers, measure the existing speakers to ensure you buy the correct size. This is critical for proper fit and function.
* Speaker depth: Be mindful of the mounting depth of your new speakers. Some aftermarket speakers might be too deep to fit in the existing space.
* Wiring harness: If you're having trouble with the wiring, consider using a speaker wiring harness adapter designed for your year and model of Tahoe. This can simplify the installation process.
* Amplifier: If your Tahoe has a factory amplifier, you may need to take extra precautions when wiring the speakers to avoid damaging the amplifier.
If you're uncomfortable performing this repair yourself, it's best to take your vehicle to a qualified car audio installer. Improper installation could damage your speakers or your vehicle's electrical system. Refer to a repair manual specific to your 1999 Chevy Tahoe for detailed diagrams and instructions.
