How do you program a 2004 Chevy Malibu ignition key?

You can't program a 2004 Chevy Malibu key yourself using simple tools. The 2004 Malibu uses a Passive Anti-Theft System (PATS), which means the key has a transponder chip inside that needs to be programmed to the car's computer. This requires specialized equipment and often dealer-level software.

Here are your options:

* Dealership: This is the most reliable method. A Chevrolet dealership has the correct tools and software to program the key quickly and correctly. Expect to pay a fee for this service.

* Locksmith: Some locksmiths specialize in automotive keys and have the necessary equipment to program PATS keys. This is often cheaper than the dealership, but make sure they have experience with 2004 Chevy Malibus and PATS systems. Get references and check reviews before choosing a locksmith.

* Third-party key programming services: These services might exist in your area, but always verify their legitimacy and expertise before trusting them with your car.

Methods that WON'T work:

* DIY with basic tools: You cannot program a PATS key using household tools or generic key-cutting machines. The transponder chip requires specific programming software and equipment.

* Generic key programming devices: Beware of cheap, universal key programmers advertised online. These rarely work reliably with newer vehicles like your 2004 Malibu and can potentially damage your car's computer system.

In short, take your vehicle to a qualified professional (dealership or reputable locksmith) for key programming. Attempting it yourself is highly unlikely to succeed and could lead to further complications.