Chevrolet Suburban 1500 2003 Bulb Size
Bulb size chart
This 2003 Chevrolet Suburban 1500 bulb size page helps you quickly verify the correct bulb for each lighting position on your SUV. Instead of guessing from a parts store label, you can match the bulb by location, such as low beam, high beam, fog light, brake light, or interior courtesy light.
Because trim and lighting equipment can vary by market and body style, this guide is organized by bulb position so you can compare the installed bulb with the listed size before buying. That makes it easier to replace a single failed bulb or plan a full lighting refresh with confidence.
For the best fitment results, always compare the bulb in your vehicle with the listing on this page before ordering, especially if your Suburban has an optional lighting package or has been modified. Halogen bulbs are the original-style fit for many positions, while LED upgrades may need extra attention for beam pattern, brightness, and compatibility. Aftermarket conversion kits can also change the way the light housing performs, so it is smart to check local rules and make sure the replacement still points correctly. If you are unsure, remove the installed bulb and confirm the number printed on the base or glass before purchase.
FAQ
What is the low beam bulb size for a 2003 Chevrolet Suburban 1500?
The low beam headlight bulb size listed for the 2003 Chevrolet Suburban 1500 is 9006.
What bulb does the high beam use on this model?
The high beam headlight bulb size is 9005.
What size is the front fog light bulb?
The front fog light bulb size listed for this Suburban is 880.
What bulb fits the front turn signal and parking light?
Both the front turn signal light and the front parking light use 4157NA on this page.
What are the rear turn signal, brake light, and tail light bulb sizes?
The rear turn signal bulb is 3157A, while both the brake light and tail light bulbs are 3157R.
What bulb is used for the back up reverse light?
The back up reverse light bulb size listed is 3157.
What is the daytime running light bulb size?
The daytime running light bulb size is 4114.
What bulb fits the license plate light?
The license plate light bulb size listed for the 2003 Chevrolet Suburban 1500 is 194.
What are the common interior bulb sizes on this Suburban?
Interior positions on this page include 578 for the dome light and trunk or cargo area light, 161 for the map light, 194 for the glove box light, 168 for one courtesy light listing, 561 for another courtesy light listing, and 2721 for a third courtesy light listing.
What bulb does the vanity mirror light use?
The vanity mirror light bulb size listed is DE3175.
What is the side marker light bulb size?
The front side marker light bulb size is 194NA.
What bulb is used for the instrument panel lights?
This page lists two instrument panel bulb options: PC74 and PC195, depending on the specific position and setup.
Do trim levels or lighting packages affect bulb fitment on a 2003 Suburban 1500?
Yes. Trim, market, and lighting package differences can change the correct bulb for certain positions, so it is best to verify by location and compare the installed bulb before ordering.