Buick LaCrosse 2010 Bulb Size
Bulb size chart
The 2010 Buick LaCrosse uses different bulb sizes depending on the lighting position, so it is important to match the bulb to the exact location on the car. This page helps you verify bulb sizes by lighting position, making it easier to replace a burned-out lamp without guessing.
Whether you are changing a headlight, a reverse light, or an interior bulb, the 2010 Buick LaCrosse can use different bulbs for different trims and lighting setups. Use this guide to narrow down the correct fit before you buy replacement bulbs.
Fitment can vary by trim, package, market, and body style, so always compare the bulb listing with the bulb already installed in your vehicle. Halogen and HID headlight systems use different bulbs, and some fog light or daytime running light setups may also differ depending on equipment. If you are considering an aftermarket LED conversion, check the bulb base, housing clearance, and local lighting rules before ordering. The safest approach is to inspect the existing bulb first, especially on items like the low beam, DRL, and fog lights, where multiple configurations are possible.
FAQ
What is the low beam headlight bulb for a 2010 Buick LaCrosse?
The low beam headlight bulb is H11 on the 2010 Buick LaCrosse with halogen headlights. Some versions with HID headlights use D1S for the high beam and low beam setup.
What bulb does the high beam use on this model?
The high beam bulb is H9 on the 2010 Buick LaCrosse for the halogen headlight setup.
Which bulb fits the front fog lights?
Front fog lights may use H11 LED or H16 LED, depending on the trim and lighting package. Check the bulb currently installed before purchasing a replacement.
What is the daytime running light bulb on halogen headlight models?
For 2010 Buick LaCrosse models with halogen headlights, the daytime running light bulb can be H11 LED or H16 LED depending on configuration.
What is the daytime running light bulb on HID headlight models?
For versions with HID headlights, the daytime running light bulb is 3157.
What bulb fits the reverse lights?
The back up reverse light bulb is 921.
What bulb is used for the license plate lights?
The license plate light bulb is 2825 or 98.
Which interior bulbs use 194 or 7441?
The glove box light, trunk or cargo area light, stepwell light, and several interior courtesy-style lamps use 194 or 7441 bulbs.
What bulb fits the dome light and interior door lights?
The dome light bulb is 2825 or 98, and the interior door light bulb is also 2825 or 98. The courtesy light uses the same bulb type.
What bulb is used for the front turn signals and parking lights?
The front turn signal light bulb is 3757A, and the parking light bulb is also 3757A.
What bulb fits the rear turn signals and rear side marker lights?
The rear turn signal light bulb is 3757A, and the rear side marker light bulb is LED on this page's bulb chart.
Do the brake lights and center high mount stop light use standard replaceable bulbs?
On this page, the brake light bulb, tail light bulb, and center high mount stop light are listed as LED, which means the lamp may be integrated rather than a simple replaceable halogen bulb. Check the assembly before ordering parts.
Can I swap the original bulbs for LED replacements?
Yes, many owners upgrade to LED replacements for some positions, but fitment depends on the socket, housing, and electrical compatibility. Make sure the LED matches the correct base and works properly with your vehicle's lighting system.
Why should I check the installed bulb before buying?
Because the 2010 Buick LaCrosse can have trim and package differences, the installed bulb is the best confirmation of fitment. This is especially important for fog lights, DRLs, and headlight systems where more than one bulb type may appear in the chart.