
PIAA 18880 880 Xtreme White Plus
$58.60
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Used for: Fog Light Bulb Front
Used for: Headlight Bulb High Beam, Daytime Running Light Bulb
Used for: Back Up Reverse Light Bulb, Turn Signal Light Bulb Rear
Used for: Brake Light Bulb, Tail Light Bulb
Used for: License Plate Light Bulb
Used for: License Plate Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front
Used for: Courtesy Light Bulb, Glove Box Light Bulb, Map Light Bulb
Used for: Courtesy Light Bulb, Glove Box Light Bulb, Map Light Bulb
Used for: Dome Light Bulb, Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This page helps you verify the bulb sizes for the 2003 Chevrolet TrailBlazer by lighting position, so you can match the correct replacement to each lamp on the vehicle. Whether you are replacing a burned-out exterior bulb or refreshing an interior light, checking the exact location first can save time and prevent ordering the wrong part.
The 2003 TrailBlazer uses a mix of common halogen and small interior bulbs, and some positions may vary by trim, market, or lighting package. Use the bulb chart on this page to confirm the fit for headlights, turn signals, brake lights, cargo lamps, and other locations before you buy.
Fitment can differ between trims and equipment groups, so it is smart to compare the bulb listed for your specific TrailBlazer with the bulb already installed in the vehicle. Some owners choose LED replacements for brighter output or longer life, but aftermarket LED conversions may change beam pattern, bulb color, or warning behavior depending on the lamp position. If you are upgrading from halogen to LED, make sure the bulb is compatible with the housing and socket, and always check the installed bulb before purchase when possible, especially for positions that can vary by package or market.
The high beam headlight bulb listed for the 2003 Chevrolet TrailBlazer is 9005.
The daytime running light bulb size listed is 9005.
The front turn signal light bulb and the parking light bulb are both listed as 3757A.
The rear turn signal light bulb is listed as 3157.
Both the brake light bulb and the tail light bulb are listed as 3157R.
The back up reverse light bulb is listed as 3157.
The front side marker light bulb is listed as 194NA.
The license plate light bulb is listed as 2825 or 98.
The dome light bulb and the trunk or cargo area light are both listed as 212-2.
The glove box light bulb, map light bulb, and courtesy light bulb are listed as 194 or 7441.
The vanity mirror light bulb is listed as 37.
The front fog light bulb is listed as 880.
The center high mount stop light bulb is listed as LED, so it is not shown as a standard halogen bulb on this page.
Yes. Trim and lighting package can vary by market and body style, so it is best to confirm the bulb position against your vehicle before ordering.