Where is the sunroof drainage hole located on the Envision?
3 Answers
The sunroof drainage hole on the Buick Envision is located near the sunroof sliding rail, which can be seen when the sunroof is fully opened. Vehicles equipped with sunroofs all have drainage holes; without them, water leakage may occur during rain. If the sunroof leaks, check whether the drainage outlet is clogged with dust. There are no special maintenance requirements for the car sunroof in daily use, just regularly inspect the surrounding sealing strips for damage and check the lubrication condition of the tracks. Below is relevant information about the Envision: 1. Exterior: In terms of appearance, the 2020 Buick Envision appears more rugged and imposing. The new wing-shaped chrome trim runs through the LED wing-shaped headlights, widening the horizontal visual effect; the dynamic front bumper surfaces and three-dimensional silver lower guard create a full and powerful front end. The rear also adopts a three-dimensional wing-shaped design, with the electroplated trim connected to the taillights, paired with integrated dual exhaust pipes to enhance the sporty feel. 2. Powertrain: The 2020 Buick Envision offers a 2.0T SIDI direct-injection turbocharged engine paired with a 9-speed HYDRA-MATIC intelligent transmission, and a 1.5T SIDI direct-injection turbocharged engine paired with a 7-speed DCG PLUS intelligent dual-clutch transmission.
I often deal with such issues, and as someone with some knowledge about cars, when it comes to the sunroof drainage holes of the Envision, they are typically located at the four corners of the sunroof frame. The front pair is near the windshield, while the rear ones are close to the tail end of the roof. These holes are designed to drain rainwater and prevent leaks into the cabin. However, if not cleaned regularly, leaves or dust can clog them, leading to water dripping inside or wet carpets. I recommend periodic checks: you can use a slender plastic tube or compressed air to gently blow through the holes and remove debris. Additionally, the sunroof drainage tubes usually connect to the underside of the car, allowing water to flow out through the frame gaps. If you hear unusual water flow sounds, it's best to address the issue promptly. Don't underestimate this small detail—it affects the cabin's dryness and long-term maintenance.
My own Envision had a sunroof leakage issue, and the drainage holes were really hidden in the corners. Specifically, there are two sets of drainage holes—front and rear. The front holes are located on both sides near the leading edge of the sunroof, close to the A-pillars, while the rear holes are near the tail end of the roof. Normally, rainwater drains through these holes. But if you neglect cleaning, like I did once when I parked under a tree in summer, the holes can get clogged with fallen leaves, leading to soaked carpets inside the car. I later used a soft brush and water to carefully unclog them, and now I check them every quarter to avoid further trouble. This kind of maintenance is quite simple, doesn’t affect driving, and can save you from costly repairs. If you’re unsure about the locations, you can peel back the roof liner to look or use a flashlight to spot the holes. A well-maintained sunroof ensures peace of mind while driving.
