Cadillac CTS-V 2017 Bulb Size
Bulb size chart
This page helps you verify bulb sizes for the 2017 Cadillac CTS-V by lighting position, so you can match the correct replacement before you buy. Whether you are changing an exterior lamp or a small interior bulb, checking the socket location first is the easiest way to avoid ordering the wrong part.
The 2017 Cadillac CTS-V uses different bulb types for different functions, and some lighting details can vary by market, trim, or body style. Use the bulb chart on this page as a quick reference for common locations such as the headlights, reverse lights, license plate lights, dome light, glove box, vanity mirror, map lights, and cargo area light.
For best fitment, always compare the listed bulb size with the bulb already installed in your car, especially if your CTS-V has a different lighting package or has been modified. Some positions may use halogen-style replaceable bulbs, while others may be part of an LED assembly or have been converted with aftermarket LED replacements. If you are upgrading to LED, check polarity, depth, and connector style before purchase, and remember that a bulb that fits physically may still need the correct beam pattern or error-free design. When in doubt, remove the old bulb and confirm the number printed on the base before ordering.
FAQ
What bulb size does the 2017 Cadillac CTS-V use for the headlight high beam and low beam?
The listed bulb size for both the high beam and low beam headlight function is D3S.
What is the reverse light bulb size on a 2017 Cadillac CTS-V?
The back up reverse light bulb size listed for this model is 921.
What bulb fits the license plate lights on the 2017 Cadillac CTS-V?
The license plate light bulb size listed is 2825.
What bulb size is used for the dome light in the 2017 Cadillac CTS-V?
The dome light bulb size listed is 2825.
What bulb fits the glove box light on this Cadillac CTS-V?
The glove box light bulb size listed is 906.
What bulb size is used for the interior door light?
The interior door light bulb size listed is 906.
What bulb size is listed for the stepwell light?
The stepwell light bulb size listed is 2886X.
What bulb fits the vanity mirror light?
The vanity mirror light bulb size listed is 6612F.
What bulb size is used for the trunk or cargo area light?
The trunk or cargo area light bulb size listed is 211-2.
What bulb size is listed for the map light?
The map light bulb size listed is PC175.
Are the bulb sizes on the 2017 Cadillac CTS-V the same for every trim or body style?
Not always. Trim, lighting package, market, and body style can affect the exact setup, so it is smart to verify the installed bulb before ordering.
Can I replace the CTS-V bulbs with LED upgrades?
Yes, many owners upgrade to LED, but the replacement must fit the socket and work correctly with the vehicle’s electrical system. Some positions may need error-free bulbs or a compatible conversion kit.
Why should I check the old bulb before buying a replacement?
Because the same model year can have different bulb setups depending on equipment level or prior repairs. Checking the installed bulb helps confirm the exact fit and avoids returns.
Do the headlight bulbs on the 2017 Cadillac CTS-V use a standard halogen bulb?
The listed headlight bulb type is D3S, which is a HID-style bulb rather than a standard halogen bulb.