Cadillac CTS 2010 Bulb Size
Bulb size chart
This 2010 Cadillac CTS bulb size page is designed to help you verify the correct bulb by lighting position, so you can match the right part before you buy. Whether you are replacing a headlight, a rear turn signal, or a small interior lamp, the goal is to make fitment easier and reduce guesswork for your CTS.
The 2010 Cadillac CTS uses a mix of halogen, HID, and LED lighting depending on the position and the vehicle’s equipment. Because trim and lighting package can vary by market and body style, it is important to confirm the bulb type for each specific location on your car before ordering replacements.
For best results, compare the bulb listed for your CTS with the bulb already installed in the vehicle, especially if your car has been modified or if you are unsure whether it has factory halogen or HID lighting. Some positions may accept LED replacements or aftermarket conversions, but fitment, beam pattern, and warning messages can differ from stock parts. Always check the installed bulb, connector style, and housing space before purchase, and remember that trim/package differences can change the correct bulb size for the same model year.
FAQ
What headlight bulb does a 2010 Cadillac CTS use for low beam?
The listed low beam headlight bulb for the 2010 Cadillac CTS is H11 on many versions. Some vehicles may use a D1S setup for the combined high beam and low beam arrangement, so you should confirm the exact headlight system on your CTS before ordering.
What high beam bulb fits the 2010 Cadillac CTS?
The high beam bulb listed for this model is H9. However, some CTS lighting packages use a D1S system for both high and low beam functions, so the correct fit depends on the specific trim and headlight design.
Which fog light bulb is used on the 2010 Cadillac CTS?
Front fog light fitment can vary. The bulb chart shows H11 LED and H16 LED options for the front fog light position, so check the fog lamp housing and the bulb already installed before buying.
What bulb size is used for the license plate lights?
The license plate light bulb is listed as 2825 or 98. These are small wedge-style bulbs commonly used for plate illumination on the 2010 Cadillac CTS.
What bulb fits the parking lights on this CTS?
The parking light bulb is listed as 2825 or 98. If your CTS has a different lighting package, confirm the bulb in the socket before replacing it.
What bulb does the dome light use in a 2010 Cadillac CTS?
The dome light bulb is listed as 2825 or 98. Interior lighting can vary by trim, so it is still a good idea to verify the bulb in the car before ordering.
What are the rear turn signal bulb details for the 2010 Cadillac CTS?
The rear turn signal bulb is listed as LED on this page. Since LED assemblies can differ by market and body style, check the exact lamp unit on your CTS if you are replacing the whole assembly or a serviceable bulb.
What bulb is used for the front turn signal on the 2010 Cadillac CTS?
The front turn signal light bulb is listed as 12272NA. This is the bulb size shown for the front signal position on the CTS page.
What bulb fits the daytime running lights?
The daytime running light bulb is listed as 5201. If your CTS has a different headlamp package, confirm the DRL setup before purchasing.
What bulb is used for the reverse lights?
The back up reverse light bulb is listed as LED. Because reverse lamp designs can vary, it is smart to compare the bulb and connector with the one already installed.
What interior bulbs are listed for the 2010 Cadillac CTS?
Interior bulb positions include glove box light 906, interior door light 906, stepwell light 2886X, vanity mirror light 6612F, trunk or cargo area light 211-2, and map light PC175. These small bulbs can differ by trim and equipment level.
Can I switch my 2010 Cadillac CTS bulbs to LED?
Some positions already use LED, and others may accept LED replacements or aftermarket LED conversions. Before converting, check fitment, polarity, and whether the new bulb will work correctly with the CTS housing and electronics.
Why does the bulb size page mention trim and lighting package differences?
Because the 2010 Cadillac CTS was offered with different lighting setups depending on market, body style, and package. That means two CTS vehicles from the same year can use different bulbs in certain positions.
What should I check before buying replacement bulbs for my CTS?
Check the bulb type listed for the exact lighting position, inspect the bulb already installed, and confirm whether your car uses halogen, HID, or LED equipment. This is the safest way to avoid buying the wrong part.