What is the low beam headlight bulb size for a 2003 Cadillac DeVille?

The 2003 Cadillac DeVille uses a 9006 LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 2003 Cadillac DeVille?

The high beam bulb size for the 2003 Cadillac DeVille is 9005 LED.

Why are my 2003 Cadillac DeVille headlights dim?

Dim headlights on a 2003 Cadillac DeVille can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9006 LED LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 2003 Cadillac DeVille fog light?

The 2003 Cadillac DeVille uses a 880 LED bulb for the fog light position.

Is the 2003 Cadillac DeVille single or dual beam?

The 2003 Cadillac DeVille uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 2003 Cadillac DeVille?

Yes, the 2003 Cadillac DeVille comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9006 LED LED conversion kit for the low beams.

Does the 2003 Cadillac DeVille have fog lights?

Yes, the 2003 Cadillac DeVille takes a 880 LED bulb for the fog light position.

Did the 2003 Cadillac DeVille change headlight bulb sizes from the previous year?

No — the 2003 Cadillac DeVille uses the same bulb sizes as the 2002 model. This configuration has been consistent across the 2000–2003 generation.

Is the 2003 Cadillac DeVille the first or last year to use 9006 LED bulbs?

The 2003 Cadillac DeVille is the last year in the 2000–2003 generation to use the 9006 LED bulb for the low beam headlight.

How do I change the headlight on a 2003 Cadillac DeVille?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old 9006 LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 2003 Cadillac DeVille?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved 9006 LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 2003 Cadillac DeVille headlights?

A pair of halogen 9006 LED bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 2003 Cadillac DeVille?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the 9006 LED position are available as direct plug-and-play replacements.

The 2003 Cadillac DeVille is the last model year to use this bulb configuration (2000–2003).

Fitment Guaranteed for 2003 Cadillac DeVille

What Size Bulbs Does a 2003 Cadillac DeVille Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 2003 Cadillac DeVille Have?

Owners of the 2003 Cadillac DeVille will find a total of 12 lighting elements throughout the vehicle's exterior. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate 9006 LED low beam and 9005 LED high beam bulbs for precise light distribution. This model belongs to the late years of the DeVille's 1958-2005 production span.

Can You Put LED Bulbs in a 2003 Cadillac DeVille?

Upgrading to LED is one of the most effective ways to modernize your Cadillac's appearance and safety profile. We recommend starting your upgrade with the 9006 LED low beams, as they see the most use. Adding a matching 9005 LED LED kit later will complete the look and ensure consistent lighting performance. Don't forget the 880 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.

2003 Cadillac DeVille Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	9006 LED	Buy 9006 LED →
High Beam	9005 LED	Buy 9005 LED →
Fog Light	880 LED	Buy 880 LED →
Brake Light	LED Bulb	Buy LED Bulb →
Side Marker	194 LED	Buy 194 LED →
Turn Signal Front	3157K LED	Buy 3157K LED →
Turn Signal Rear	LED Bulb	Buy LED Bulb →
License Plate	PC168	Buy PC168 →
Map Light	578	Buy 578 →
Parking Light	3157K	Buy 3157K →
Reverse Light	3157KX	Buy 3157KX →
Trunk Light	211-2	Buy 211-2 →

How do the 2003 Cadillac DeVille's bulbs compare to other years?

The 2003 Cadillac DeVille uses the same bulbs as the 2002 model.

The 2004 model switched to a different bulb configuration.

This bulb configuration covers the 2000–2003 model years. ← 2002 2004 →

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Other DeVille Years

2005 2004 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1990 1989 1988 1987 1986 1985 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958

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