2015 Cadillac ATS Bulb Sizes

Headlight Bulb High Beam and Low Beam(with halogen headlights) - 9012

Headlight Bulb High Beam and Low Beam(with HID headlights) - D3S

License Plate Light Bulb - 2825

Back Up Reverse Light Bulb - 921

Stepwell Light Bulb - 194

Trunk or Cargo Area Light - 194

Interior Door Light Bulb - 194

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