Where is air filter on Cadillac srx?

The air filter on a Cadillac SRX is located inside a plastic housing under the hood, typically towards the front of the engine compartment. You'll need to open the hood and look around for a rectangular or slightly oval-shaped plastic box with a noticeable air intake. Often there will be a label indicating "Air Filter" or a similar marking. It's usually fairly easy to spot once you've opened the hood.