For the 2010 Cadillac CTS, headlight bulb fitment varies by headlight configuration. The low beam is listed as either D1S or H11, while the high beam uses either H9 or D1S. Confirm the existing headlight type and connector before ordering, since these options are not interchangeable.
Front fog light fitment is listed as H11 LED or H16 LED. The daytime running light uses a 5201 bulb. Front turn signals use 12272NA, and the front side marker uses 194NA.
- Reverse, brake, center stop, tail, rear turn signal, and rear side marker lighting is listed as LED.
- License plate, parking, and dome lights use 2825 or 98.
- Interior applications include 906 for the glove box and interior light, PC175 for the map light, 211-2 for the trunk, and 6612F for the vanity light.
- The step light uses 2886X.