Used for: Back Up Reverse Light Bulb
Used for: Trunk or Cargo Area Light
Used for: Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This page covers the 2017 Cadillac CT6 bulb sizes by lighting position, so you can quickly verify the correct replacement for each exterior and interior lamp. Use it as a reference when checking the headlight, tail light, turn signal, parking light, license plate light, reverse light, and cabin bulbs on your CT6.
The 2017 Cadillac CT6 uses LED lighting for many of its exterior functions, while a few interior and utility lights use replaceable bulb types. Because bulb fitment can vary by trim, market, and lighting package, it is important to match the bulb location on the vehicle with the listing on this page before buying replacements.
For the best fitment results, compare your CT6’s installed bulb or lamp assembly with the bulb chart before ordering. Some trims may use different LED modules or package-specific lighting equipment, and aftermarket conversions can change the original bulb type or connector style. If your car has been modified, or if you are replacing a lamp after a previous repair, check the existing bulb and housing carefully so you do not rely only on the model year. This is especially important on LED-equipped positions, where the entire unit may be serviced differently than a traditional halogen bulb.
The 2017 Cadillac CT6 low beam headlight is listed as LED on this page. Because it is an LED application, the exact service part can depend on the headlamp design and trim package.
The high beam headlight on the 2017 Cadillac CT6 is listed as LED. Verify the lamp assembly and trim before purchase, since LED headlight service parts are not always interchangeable across packages.
The back up reverse light bulb is listed as 921 for the 2017 Cadillac CT6.
The trunk or cargo area light bulbs are listed as 194 and 7441 for the 2017 Cadillac CT6.
The vanity mirror light bulb is listed as 6612F for the 2017 Cadillac CT6.
The brake light bulb is listed as LED. On LED-equipped brake lamps, the service method may involve the lamp module rather than a simple bulb swap.
The front turn signal light bulb is listed as LED for the 2017 Cadillac CT6.
The rear turn signal light bulb is listed as LED for the 2017 Cadillac CT6.
Yes. The license plate light bulb is listed as LED on this page for the 2017 Cadillac CT6.
Yes. Both the parking light bulb and the daytime running light bulb are listed as LED for the 2017 Cadillac CT6.
Check the exact lighting position, your trim level, and whether the vehicle has a specific lighting package. It is also smart to inspect the installed bulb or lamp assembly before purchase, especially if the car has been repaired or modified.
Yes. Trim and lighting package can vary by market and body style, and that can affect bulb fitment. Always match the bulb location on the car to the chart for the most accurate result.
