17 Years Available
Cadillac Cts Light Bulb Sizes
Complete bulb size reference for the Cadillac Cts from 2003 to 2019. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Year Range
2003 – 2019
17 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status |
|---|---|---|---|
| Low Beam | HID-D1S LED(2003–2015) HID-D3S LED(2016–2019) | 17 years | Changed |
| High Beam | HID-D1S LED(2008–2015) 9005XS LED(2003–2007) HID-D3S LED(2016–2019) | 17 years | Changed |
| Fog Light | H11 LED(2008–2015) 9145 LED(2003–2007) LED Fog Light(2016–2019) | 17 years | Changed |
| Brake Light | LED Bulb(2008–2019) PC175 LED(2003–2007) | 17 years | Changed |
| Side Marker | LED Bulb(2008–2019) 2825 LED(2003–2007) | 17 years | Changed |
| Turn Signal Front | 12272 LED or 12188NA(2008–2014) 2825 LED(2003–2007) LED Bulb(2016–2019) 12272 LED(2015–2015) | 17 years | Changed |
| Turn Signal Rear | LED Bulb(2008–2019) 3157K LED(2003–2007) | 17 years | Changed |
| Dome Light | 2825(2008–2019) PC175(2003–2007) 906(2014–2014) | 17 years | Changed |
| License Plate | 2825(2003–2019) | 17 years | Consistent |
| Map Light | PC175(2003–2019) | 17 years | Consistent |
| Parking Light | 2825(2003–2014) LED Bulb(2015–2019) | 17 years | Changed |
| Reverse Light | 921(2014–2019) LED Bulb(2008–2013) 3157K(2003–2007) | 17 years | Changed |
| Trunk Light | 211-2(2003–2019) | 17 years | Consistent |
Select Your Year
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Frequently Asked Questions
We have bulb size data for the Cadillac Cts from 2003 to 2019, covering 17 model years.
Yes, the Cadillac Cts has used different bulb sizes across model years. Check the bulb evolution table above to see exactly which sizes were used in which years.
The most commonly used low beam headlight bulb for the Cadillac Cts is the HID-D1S LED. Select your specific year below for the exact fitment.
Yes, you can upgrade your Cadillac Cts headlights to LED. Look for an LED conversion kit in the HID-D1S LED size for the low beams. LED bulbs offer better visibility and longer lifespan.
Select your Cadillac Cts year from the list below. Each year page shows every bulb position with the correct size and links to purchase on Amazon.