Question: where is the ignition module located on a 2004 Chevy Malibu classic?

Answer: The ignition module location on your Chevy Malibu Classic depends on the engine size. Most Malibu Classic's ( 2004 was a strange year) are the 2.4L Ecotec four cylinder. In that case, the ignition module is located on top of the ignition coil housing. On the drivers side of the engine. 4 small Torx screws hold it on that aluminum housing.

If your car has the V6 engine, it is located under the 3 ignition coils on the top rear of the engine, near the firewall. Just remove the two 5.5mm screws on each coil, lift the coils, and the ignition module is the flat part under them, It just lifts right up. Be sure to mark the spark plug wire numbers before removal.