What are the solutions for the sunroof noise in ATSL?
3 Answers
If the Cadillac ATSL has sunroof noise, you need to clean the sunroof rubber seal and spray some rubber protectant to solve the problem. If the noise is caused by loose sunroof structure, the method of adding non-woven fabric can be used to fix it. Precautions for using the sunroof: 1. Before opening the sunroof, make sure there are no obstacles on the roof that may hinder the sliding of the sunroof. 2. Try not to use the sunroof on bumpy roads to avoid damage to the sunroof and sliding rail components due to vibration. 3. It is strictly forbidden to open the sunroof on rainy days or when washing the car to prevent rainwater or water droplets from causing the rubber seals and metal parts inside the sunroof to age and rust easily.
I also encountered the issue of ATS-L sunroof rattling, and it took me several attempts to fix it. First, check if there are any small stones or dust stuck in the tracks. Clean them thoroughly with a soft brush and apply specialized grease—the effect is immediate. If the rubber seals are aging and creaking, try applying some rubber protectant. Later, I discovered that the rear bracket screws were loose, and the noise only stopped after removing the sunroof glass and tightening the screws. If these methods don’t work, it might be due to a deformed sunroof frame or worn sliding tracks, in which case you’ll need to visit a 4S shop. I recommend regularly cleaning and maintaining the tracks, especially for those who park under trees often, as accumulated tree sap and dust can quickly lead to rattling.
Last time my buddy helped me fix the ATS-L sunroof rattle, we identified several key points. The main cause was old lubricant in the tracks drying up and forming clumps - needed to spray WD40 for cleaning before applying new grease. Deformed brackets can prevent the sunroof from closing tightly, causing squeaks when it rains. Don't neglect weatherstrip maintenance - replace if cracked. The worst find was clogged drainage holes causing water accumulation in track channels leading to rust-induced noises. Recommend quarterly cleaning of track channels and drainage tubes. DIYers can handle it with proper tools, but sunroof removal requires two-person coordination. For older vehicles, suggest directly replacing with improved sunroof brackets as OEM parts have design flaws.
