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
The 2016 Cadillac CT6 uses a mostly LED lighting setup, and this page helps you verify bulb sizes by lighting position so you can match the correct replacement for each lamp location. Whether you are checking the headlights, tail lights, license plate lights, or interior bulbs, the goal is to make it easier to identify the right fit before you buy.
Because Cadillac used different lighting configurations depending on trim, market, and body style, the bulb list for the 2016 CT6 can vary by position. This year page is organized to help you compare the bulb type shown for each location, including exterior signal and marker lights as well as interior cargo and vanity mirror bulbs.
For best fitment, always compare the bulb position on your vehicle with the chart and confirm what is actually installed before ordering. Trim and lighting package differences can change whether a lamp is LED or uses a separate service bulb, and some aftermarket conversions may not match the factory setup exactly. If your CT6 has been modified with retrofit LEDs or replacement housings, the bulb type on the car may differ from the original equipment listing. Checking the existing bulb, connector style, and housing design first can save time and prevent returns, especially on a model like the CT6 where many exterior lights are LED-based but a few serviceable bulbs, such as the reverse light and certain interior lamps, may still use standard bulb numbers.
The 2016 Cadillac CT6 page includes LED listings for the high beam headlight, low beam headlight, center high mount stop light, brake light, front turn signal, rear turn signal, license plate light, parking light, tail light, daytime running light, and front and rear side marker lights. It also lists a 921 bulb for the back up reverse light, 194 and 7441 for the trunk or cargo area light, and 6612F for the vanity mirror light.
Yes, the bulb chart for this page shows LED for both the high beam and low beam headlight positions on the 2016 Cadillac CT6.
Yes. The back up reverse light bulb is listed as 921 for this model year.
The trunk or cargo area light uses either a 194 or a 7441 bulb, depending on the exact lamp setup on the vehicle.
The vanity mirror light bulb is listed as 6612F.
Not always. Trim level, lighting package, market, and body style can affect the exact bulb setup, especially on LED-equipped exterior lights.
Usually no. If the factory setup is LED, the housing and electrical design are typically intended for LED use, so a direct halogen swap is generally not a like-for-like replacement.
Cadillac used LED lighting extensively on the 2016 CT6 for headlights, rear lighting, markers, and signal functions. That is why many positions on this page are listed as LED rather than a traditional replaceable bulb number.
Match the bulb position on the vehicle to the chart, then verify the installed bulb or housing style before ordering. This is especially important if the car has been modified or if you are working with a trim that uses a different lighting package.
Both front and rear turn signal positions are listed as LED on this page, but that does not mean the housings or service methods are identical. It is best to confirm the exact lamp location before replacement.
Check whether the light is a serviceable bulb or a sealed LED assembly, confirm the trim and package, and inspect the installed bulb number or connector type. This is the safest way to avoid ordering the wrong part.
Yes. In addition to the exterior lighting positions, this page includes the trunk or cargo area light and the vanity mirror light so you can verify those smaller interior bulb sizes as well.
