2018 GMC Sierra Headlight Bulb Size
Introduction
The GMC Sierra is a popular and reliable pickup truck known for its powerful performance and rugged design. One important aspect of any vehicle’s safety is its headlights, which provide visibility during nighttime driving or in adverse weather conditions. If you own a 2018 GMC Sierra and need to replace your headlight bulbs, it is essential to know the correct bulb size to ensure a proper fit. In this article, we will discuss the headlight bulb size for the 2018 GMC Sierra and provide you with the necessary information to make the replacement process easier.
Headlight Bulb Size Table
To help you quickly identify the correct headlight bulb size for your 2018 GMC Sierra, we have compiled a table below:
| Headlight Type | Bulb Size |
|---|---|
| Low Beam | H11 |
| High Beam | 9005 |
| Fog Light | H11 |
Understanding the Bulb Sizes
Now that you have the headlight bulb sizes for the 2018 GMC Sierra, let’s take a closer look at what each size represents:
– H11: This bulb size is commonly used for the low beam and fog lights in the 2018 GMC Sierra. It is a single filament bulb with a PGJ19-2 base type. H11 bulbs are known for their excellent light output and durability.
– 9005: The 9005 bulb size is used for the high beam headlights in the 2018 GMC Sierra. It is a single filament bulb with a P20d base type. 9005 bulbs are designed to provide a bright and focused beam of light for enhanced visibility during nighttime driving.
Replacing the Headlight Bulbs
Now that you know the correct headlight bulb sizes for your 2018 GMC Sierra, here are the general steps to replace them:
1. Park your vehicle on a flat surface and turn off the engine. Make sure the headlights are also turned off.
2. Open the hood of your GMC Sierra and locate the back of the headlight assembly.
3. Depending on the specific model and trim level of your Sierra, you may need to remove a dust cover or access panel to reach the headlight bulb.
4. Once you have access to the bulb, unplug the electrical connector by gently pressing the release tab and pulling it away from the bulb.
5. Remove the old bulb by twisting it counterclockwise and pulling it out of the socket.
6. Insert the new bulb into the socket and twist it clockwise to secure it in place.
7. Reconnect the electrical connector to the new bulb by pushing it in until it clicks into place.
8. If you had to remove a dust cover or access panel, reattach it securely.
9. Repeat the above steps for the other headlight bulb if necessary.
10. Close the hood of your GMC Sierra and test the new bulbs by turning on the headlights.
Conclusion
Knowing the correct headlight bulb size for your 2018 GMC Sierra is crucial when it comes to replacing them. By referring to the table provided and following the steps outlined, you can easily replace the headlight bulbs in your Sierra and ensure optimal visibility on the road. Remember to always consult your vehicle’s owner’s manual or seek professional assistance if you are unsure or uncomfortable with performing the replacement yourself.