
The tutorial for replacing a bulb on the Buick Excelle is: 1. Open the engine hood, and you can see the lamp cover near the lamp base inside the engine compartment; 2. Rotate the lamp cover counterclockwise and remove it; 3. Rotate the lamp base counterclockwise to detach it, replace with a new bulb, insert it into the lamp base, and rotate clockwise to secure; 4. Rotate the lamp bracket clockwise until it cannot be turned further, then install the lamp cover. Taking the 2019 Buick Excelle as an example, it belongs to the compact car category, with body dimensions of: length 4609mm, width 1798mm, height 1486mm, wheelbase 2640mm, fuel tank capacity 44l, and trunk capacity 400l. The 2019 Buick Excelle is equipped with a 1.0t turbocharged engine, with a maximum horsepower of 125ps, maximum power of 92kw, maximum torque of 170nm, paired with a 6-speed manual transmission.

Changing the bulb on an Excelle by yourself is actually not difficult, the key is to locate the right position. First, open the engine hood and find the rear cover of the headlight, which can be opened by twisting it counterclockwise. Remember to disconnect the power cable plug, then press the metal spring clip and push it aside to loosen the bulb. When installing the new bulb, never touch the glass part with your hands, as sweat can shorten the bulb's lifespan. Align it with the slot, insert it, and fasten the spring. Reconnect the power cable to test if the light works properly before putting the rear cover back on. The low beam bulb model is H7, while some high beams are H9, so it's best to confirm before replacing. If the position is too narrow to reach, you might need to remove the front wheel liner, in which case it's better to seek professional help. The whole process takes about ten minutes, but those with larger hands might need a bit more time.

Last time I replaced the bulb for my Excelle, it mainly involved three steps: preparation, replacement, and adjustment. The tools required were just a new bulb (H7 or 9005 depending on the specific model), gloves, and possibly a screwdriver. The specific steps were to open the hood, unscrew the headlight dust cover, release the bulb clip, and gently pull out the old bulb. When installing the new bulb, ensure the three tabs on the base are aligned, then press the clip back until you hear a click to confirm it's locked. Important reminder: Avoid getting fingerprints on the bulb during the entire removal and installation process. After completion, the headlight beam height must be adjusted, a step many roadside shops skip, resulting in scattered light. Additionally, the Excelle's design is quite compact, and on the driver's side, you may need to remove the air filter box to have enough working space.

As a mechanic with ten years of experience, I recommend three key points for Buick Excelle owners when replacing bulbs: First, confirm the bulb model to avoid mistakes—older models use H7 for low beam and H9 for high beam, while newer models might use 9012. Second, the most critical aspect is the working space—the passenger side can be accessed directly by hand, but the driver’s side requires removing the intake resonator box (just two screws). Third, when testing, turn on the lights to check the cutoff line—the Excelle’s reflector design is unique, and improper bulb alignment can cause uneven light distribution. Specific tips include pinching the base when unplugging the connector to avoid pulling the wires, and using your thumb to press down and push outward on the spring clip for easier removal. After replacement, check the light pattern against a white wall at night—if the height difference between left and right exceeds a fist’s width, readjustment is necessary.


