How do you set the automatic garage door opener on a 2000 Chevy Blazer?

There's no single "automatic garage door opener" setting in a 2000 Chevy Blazer. The Blazer doesn't have a built-in system to automatically open your garage door. Instead, you'd use a homelink garage door opener system. This is a common aftermarket feature installed in many vehicles.

If your 2000 Chevy Blazer has a HomeLink system (it's usually a small panel with three buttons near the rearview mirror), then programming works like this (steps may vary slightly depending on your specific HomeLink system and garage door opener):

1. Locate the HomeLink buttons: These are usually near the rearview mirror.

2. Find your garage door opener's learn button: This is usually located on the motor unit of your garage door opener inside your garage. It might be a small button or a switch. Consult your garage door opener's manual.

3. Put your HomeLink system into programming mode: This usually involves holding down one or more HomeLink buttons for a specific time. Consult your Blazer's owner's manual or the HomeLink instructions that may have come with your vehicle. The manual will specify which buttons and how long to hold them.

4. Program the HomeLink button: After entering programming mode, you'll typically need to press and hold one of the HomeLink buttons while simultaneously pressing and releasing the learn button on your garage door opener.

5. Repeat the process: Often, you'll need to repeat the process to confirm the programming. Your garage door should open or close.

6. Test: Try opening and closing your garage door using the programmed HomeLink button.

Important Considerations:

* HomeLink System: Not all 2000 Chevy Blazers came equipped with HomeLink. Check your vehicle to see if it's present.

* Owner's Manuals: Refer to your 2000 Chevy Blazer's owner's manual and your garage door opener's manual for detailed instructions specific to your models. The process might have slight variations.

* Professional Installation: If you're not comfortable with the programming process or if your Blazer doesn't have HomeLink, consider having a professional install a HomeLink system or another compatible garage door opener system.

If your Blazer *doesn't* have a HomeLink system, you'll need to purchase and install one. Many aftermarket kits are available. Keep in mind this is a more involved process and might require professional help.