2004 Cadillac SRX bulb fitment varies by headlight type. Models with halogen headlights use a 9006XS bulb for the low beam, while models with HID headlights use a D1S low-beam bulb. The high beam and daytime running light both use a 9005XS bulb.
For exterior lighting, the front turn signal uses a 3757A bulb, and the reverse light uses a 3157 bulb. The tail lights, rear turn signals, brake lights, and center stop light are listed as LED applications.
Check the original bulb before replacing the parking or license plate lights. The parking light may use either 2825 or 98 under Option 1, or 3757A under Option 2. The license plate light is listed with either 2825 or 98, while the front side marker uses 2825 or 98.
Interior applications include 578 for the dome light, 906 for the interior light, 2886X for the map light, 211-2 for the trunk light, and 7065 for the vanity light.