Where are the drainage outlets of the Buick LaCrosse located?

[VanAubree]

Here are the distribution locations of the drainage holes on the Buick LaCrosse: 1. Fuel tank vent hole: Open the fuel filler flap, and you can see the drainage hole at the bottom inside the fuel tank cover. 2. Sunroof drainage holes: There is one at each of the four corners of the sunroof. Open the sunroof, and you can easily see four small holes, each connected to a hose leading to the front and rear of the car. 3. Door panel drainage holes: The door vent holes are located at the lower part of the door panel, usually with 1 to 2 holes. 4. Trunk drainage hole: The trunk drainage hole is generally located under the spare tire in the trunk. 5. Engine compartment drainage hole: Located at the rear of the engine compartment, under the lower edge of the windshield, near the air conditioning intake. 6. Air conditioning drainage hole: Located under the chassis.

[Alyssa]

I've been driving a Buick LaCrosse for several years, and before every rainy season, I always check the drainage outlets to prevent leaks. The drainage outlets are mainly located at the four corners of the sunroof, where there are small holes connected to hoses. The pipes run down along the A-pillars and C-pillars, with the exits usually near the front or rear wheel arches at the bottom of the car, where you can feel or see the small drainage holes. I once had leaves block them, causing rainwater to back up into the car and soak the carpets. I had to clean it myself by gently poking out the debris with a small stick. I recommend checking them at the start of each season, using an air gun or a soft brush to clear them—don’t force it to avoid damaging the pipes. This method is cost-effective, practical, and helps prevent mold and electrical short circuits in the car. It makes car maintenance feel simple.