How to choose the perfect headlight bulbs for the Cadillac CTS?

2019 Cadillac Cts ChartBulb Number
Headlight Bulb High Beam and Low Beam
D3S
Center High Mount Stop Light Bulb
LED
Brake Light Bulb
LED
Turn Signal Light Bulb Front
LED
License Plate Light Bulb
2825
License Plate Light Bulb
98
Tail Light Bulb
LED
Daytime Running Light Bulb
LED
Turn Signal Light Bulb Rear
LED
Back Up Reverse Light Bulb
921
Side Marker Light Bulb Front
LED
Side Marker Light Bulb Rear
LED
Stepwell Light Bulb
2886X
Vanity Mirror Light Bulb
6612F
Glove Box Light Bulb
906
Trunk or Cargo Area Light
211-2
Dome Light Bulb
2825
Dome Light Bulb
98
Map Light Bulb
PC175
Interior Door Light Bulb
906

Cadillac has transformed from the ultra-luxurious carmaker to a sporty one in the recent few years, and the CTS is one of their best examples. Owners of this vehicle have excellent performance on their disposal and luxurious amenities inside. The CTS is also very comfortable on long journeys, whatever the road you’re driving on.

All of this only puts an even bigger importance on the lighting system of the Cadillac CTS. While Cadillac really did a great job with the headlights, for example, you can still improve on them. For example, if you have a model with normal halogen headlights, you can replace them with HID bulbs that will shine brighter and last longer.

At the end of the day, keeping the headlights in great shape is also very important – you don’t want to replace your broken bulb with a worse one, do you? In this guide, we will talk about ways to improve the headlights, and also how to keep them in shape in the long run.

Cadillac CTS Headlight Bulb Size Chart

Cadillac CTS Second generation (2008–2013)

How to find the right headlight bulbs for Cadillac CTS?

Cadillac used different types of headlight bulbs depending on the year when the CTS was produced. That’s why, it is always best to check in the owner’s manual for the bulb type or ask at the nearest Cadillac dealer. That said, we will still include a guide here, but take it with a grain of salt, especially for model years that overlap.

  • 2003 through 2007 mode year – 9006XC headlight bulb for the low beam, 9005XS headlight bulb for the high beam
  • 2008 through 2013 mode year – H11 headlight bulbs for the low beam, H9 headlight bulbs for the high beam

How to upgrade the headlight bulbs on the Cadillac CTS?

Most new Cadillac CTS models already come with HID bulbs, which cannot be greatly improved when it comes to brightness. However, you can still replace them with aftermarket headlights for better looks. Other than that, owners of CTS with halogen headlights have a lot of options to improve the lighting on their vehicles.

The first one, and obviously the most straightforward, is to always replace the headlight bulbs on your CTS with high-quality ones from reputable manufacturers. There are a lot of cheap bulbs that promise great performance, but trust us, here you get what you pay for. High-quality bulbs will not only shine brighter, but they will last longer.

HID bulbs are an even better option. They produce a brighter light than halogen bulbs and last even longer. That said, they have drawbacks, namely the price, which is much higher than halogen bulbs. They are also not very easy to install – you must use a conversion kit because they work on different electricity.

In the last few years, LED bulbs have surfaced as a viable option. They claim that they shine even brighter than HID bulbs, while also being more efficient. However, in reality, they don’t work very good with existing headlight housing design. In other words, to get the most out of LED bulbs, you will need to buy completely new aftermarket LED matrix headlights.

Ah, yes, aftermarket headlights. In the past, replacing the headlight assembly with an aftermarket one meant that you’ll get an inferior product, but not anymore. Today you can find excellent headlights for the Cadillac CTS, which will not only shine brighter, but they will look much better as well. Most of them come with LED daytime running lights, as well as the ability to change color temperature and even full RGB support. Of course, these headlights are not cheap, but if you’re serious about lighting, they are definitely worth it.

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