Cadillac CTS-V 2015 Bulb Size
Bulb size chart
This 2015 Cadillac CTS-V bulb size page helps you verify the correct bulb by lighting position before you buy replacement parts. Because the CTS-V could be equipped with different lighting setups, the exact bulb can change depending on body style, trim, and headlight package.
Use the chart on this page to match each exterior and interior light to the correct size, including headlights, fog lights, turn signals, parking lights, license plate lights, and cabin bulbs. That makes it easier to replace only the bulb you need and avoid ordering the wrong part.
Fitment on the 2015 Cadillac CTS-V can vary by market and by whether the car is a sedan or coupe, so always compare the bulb position on your vehicle with the chart before ordering. Some locations may use halogen bulbs, HID bulbs, or LED-style replacements, and aftermarket conversions can change what is actually installed. If your car has been modified, or if you are unsure whether the previous owner changed the lighting package, check the existing bulb before purchase so you can confirm the correct base and type.
FAQ
What bulb size does the 2015 Cadillac CTS-V use for the low beam headlights?
For the sedan with the HID-style headlight setup, the low and high beam bulb listing is D3S. Other lighting configurations may use different bulbs, so verify your body style and headlight package before ordering.
What is the high beam bulb size for the 2015 Cadillac CTS-V?
The listed high beam bulb size is H9 for the 2015 Cadillac CTS-V in the applicable setup. If your car has a different headlight package, check the installed bulb to confirm fitment.
What bulb does the front fog light use on this CTS-V?
The front fog light bulb is listed as H11 LED. If the fog lights have been converted or replaced with aftermarket parts, the installed bulb may not match the factory listing.
What size is the back up reverse light bulb?
The back up reverse light bulb is 921. This is the bulb to check if your reverse lights are dim, out, or flickering.
What bulb size fits the license plate lights?
The license plate light bulb size is 2825. That same 2825 listing also appears for some other small exterior and interior positions on this page.
What bulb is used for the parking lights?
The parking light bulb is listed as 2825. Always confirm the socket and lamp location on the vehicle, especially if the lighting has been changed before.
What are the dome light and map light bulb sizes?
The dome light uses 2825, and the map light uses PC175. These are interior bulbs, so it is a good idea to replace them carefully to avoid damaging the lens or housing.
What bulb size is used for the glove box and interior door lights?
Both the glove box light and the interior door light are listed as 906. If one side is out, it is often smart to replace both if they have similar age and wear.
What bulb does the trunk or cargo area light use?
The trunk or cargo area light bulb is 211-2. This bulb is commonly used for small cargo lamps and is easy to verify by checking the existing bulb.
What is the side marker bulb size on the front of the 2015 CTS-V?
The front side marker light bulb is 194NA. If your side marker is dim or failed, match the bulb base and shape carefully before buying a replacement.
What bulb size is listed for the daytime running lights?
The daytime running light bulb is 5201. Because DRL setups can differ with trim or lighting package, confirm the installed bulb if your car has been modified.
Does the 2015 Cadillac CTS-V coupe use the same headlight bulb as the sedan?
Not always. The coupe with HID headlights is listed with D1S for the high and low beam headlight bulb, while the sedan listing shows D3S for the combined high and low beam HID setup.
Can I use LED replacements in place of the factory bulbs?
In some positions, yes, but fit and performance depend on the housing and the vehicle’s electrical system. Make sure the replacement matches the bulb size and is suitable for the specific light position on your CTS-V.
What should I check before ordering bulbs for my 2015 CTS-V?
Check the body style, headlight package, and the bulb already installed in the lamp. The 2015 Cadillac CTS-V can vary by market and trim, so verifying the actual bulb helps prevent ordering the wrong part.