What Size Bulbs Does a 2006 Buick Terraza 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 2006 Buick Terraza Have?
The 2006 Buick Terraza features an extensive lighting system with 13 bulb positions. It uses halogen technology with a single H11 LED dual-filament bulb handling both low and high beams. The Terraza has been available from 2005 to 2007, and the 2006 model falls in the mid-generation years.
Can You Put LED Bulbs in a 2006 Buick Terraza?
Upgrading the 2006 Buick Terraza to LED headlights is straightforward since it uses a single H11 LED dual-filament bulb for both low and high beams. You only need one pair of LED bulbs to upgrade both functions. Look for a H11 LED LED kit that specifically supports dual-filament operation to ensure both beams work correctly. For the fog lights, a LED Fog Light LED bulb provides a clean white output that pairs well with LED headlights.
How to Replace Bulbs on a 2006 Buick Terraza
The H11 bulb uses a quarter-turn bayonet mount that locks with a short twist. To remove the old bulb, disconnect the wiring harness first, then twist the bulb counter-clockwise and pull it out. Older model years like the 2006 Terraza typically offer easy access to the headlight bulbs from behind the headlight assembly under the hood. Most owners can complete the swap in under 10 minutes per side. When installing the new bulb, avoid touching the glass with bare fingers. Skin oils create hot spots that shorten bulb life. Wear clean gloves or handle the bulb by its plastic base only. The fog lights are accessed from underneath the front bumper. You may need to remove a few plastic clips or screws from the fender liner to reach the LED Fog Light fog light socket.
Full Upgrade Bundle
Upgrade All 13 Positions at Once
2006 Buick Terraza Complete Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
Low Beam | H11 LED | Buy H11 LED |
High Beam | H11 LED | Buy H11 LED |
Fog Light | LED Fog Light | Buy LED Fog Light |
Brake Light | LED Bulb | Buy LED Bulb |
Side Marker | 194 LED | Buy 194 LED |
Turn Signal Front | 3157NA LED | Buy 3157NA LED |
Turn Signal Rear | 3157K LED | Buy 3157K LED |
Dome Light | 562 | Buy 562 |
License Plate | 192 | Buy 192 |
Map Light | 192 | Buy 192 |
Parking Light | 3157NA | Buy 3157NA |
Reverse Light | 3157K | Buy 3157K |
Trunk Light | 562 | Buy 562 |
Want to upgrade everything at once?
Shop Complete LED Kit for 2006 Buick TerrazaHow Long Do 2006 Buick Terraza Headlight Bulbs Last?
Standard halogen headlights on the 2006 Buick Terraza have an expected lifespan of 500 to 1,000 hours, which works out to roughly 2 to 3 years of normal use. Signs of a failing halogen bulb include noticeably dimmer output, a yellowish tint compared to the other headlight, or intermittent flickering. At 20 years old, the original bulbs on your Terraza are likely overdue for replacement. Even if they still illuminate, reduced brightness significantly impacts nighttime safety. When one headlight burns out, replace both sides at the same time. Bulbs from the same batch age at similar rates, and mismatched brightness is distracting to oncoming drivers.
What Bulbs Are Compatible with the 2006 Buick Terraza?
The H11 low beam bulb on the 2006 Buick Terraza is cross-compatible with H8, H9, H16 bulbs. These share the same physical base and electrical connection, so they will fit the socket. However, H11 is the recommended size because it is optimized for the wattage and beam pattern designed into your headlight housing. Using the wrong bulb size can cause improper beam patterns that reduce your visibility and blind other drivers. It can also cause overheating inside the headlight housing, potentially warping the plastic lens or reflector. Always verify the bulb number before purchasing.
2006 Buick Terraza Headlight FAQ
Did Buick Terraza Bulb Sizes Change Over the Years?
The Buick Terraza has maintained consistent bulb sizes across all model years from 2005 to 2007. The low beam has used a H11 LED bulb throughout, which means replacement parts and LED upgrade kits are widely available and well-tested for this model. If you find a deal on bulbs for any Terraza year in this range, they will fit your 2006 model.
Other Terraza Years
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Other Vehicles That Use H11 LED Bulbs
These vehicles from other makes also use a H11 LED low beam bulb: