Cadillac CTS-V 2005 Bulb Size
Bulb size chart
This page helps you verify bulb sizes for the 2005 Cadillac CTS-V by lighting position, so you can match the correct bulb before you buy. Because the CTS-V could be equipped with different lighting setups, checking the exact location is the safest way to avoid ordering the wrong part.
Use the bulb chart below to identify common exterior and interior bulbs on this model, including headlights, tail lamps, turn signals, license plate lights, and cabin lights. It is a quick reference for replacement planning, whether you are doing a simple swap or comparing stock bulbs with LED upgrades.
Fitment can vary by trim, package, market, and body style, so always confirm the bulb type on the vehicle before purchase. This is especially important on the 2005 Cadillac CTS-V because some positions may use halogen or HID lighting, and aftermarket conversions can change the required bulb or connector style. If your car has been modified with LED replacements, projector retrofits, or nonfactory housings, the listed bulb size may not match what is currently installed. For the best results, remove the old bulb and compare it to the chart, then check the socket, base shape, and any markings on the bulb itself before ordering replacements.
FAQ
What bulb size does the 2005 Cadillac CTS-V use for the low beam headlight?
The 2005 Cadillac CTS-V may use D1S for HID low beam headlights or 9006XS for halogen low beam headlights, depending on the lighting setup.
What is the high beam bulb for the 2005 Cadillac CTS-V?
The high beam bulb is 9005XS.
What bulb fits the front fog light on this model?
The front fog light bulb is listed as 9145 LED.
What bulb size is used for the daytime running light?
The daytime running light bulb is 3157.
What bulb do I need for the back up reverse light?
The back up reverse light bulb is 3157.
What are the rear turn signal bulb sizes on the 2005 Cadillac CTS-V?
The rear turn signal light bulb is 3157A.
What bulb is used for the front outer turn signal?
The front outer turn signal light bulb is 2825.
What bulb is used for the front inner turn signal?
The front inner turn signal light bulb is 3157A.
What bulb fits the brake light and tail light?
Both the brake light and tail light use 3157R.
What bulb is used for the license plate light?
The license plate light bulb is 2825.
What bulb fits the front side marker light?
The front side marker light bulb is 194NA.
What bulb fits the rear side marker light?
The rear side marker light bulb is 2825.
What bulb is used for the trunk or cargo area light?
The trunk or cargo area light uses 211-2.
What bulb is used for the center high mount stop light?
The center high mount stop light bulb is PC175.
What bulb fits the dome light and map light?
Both the dome light and map light use PC175.
What bulb is used for the courtesy light?
The courtesy light bulb is 564.
Can I switch the 2005 Cadillac CTS-V bulbs to LED?
Yes, many positions can be upgraded to LED, but you should match the correct base and size first. Some LED replacements may need polarity checks, resistors, or CAN-bus compatible parts to avoid warnings or hyperflash.
Why does the bulb size page matter if my CTS-V has different options?
It helps you verify the bulb size by lighting position, which is useful when trim level, market, or previous repairs have changed the original setup.