Chevy Silverado Roof Water Leak FIX! (Third Brake Light Gasket Replacement)

Is your Chevy Silverado or GMC Sierra (2014-2018) headliner stained from a water leak? The culprit is almost always a failed third brake light gasket! In this video, I'll show you exactly how to fix this common issue quickly and cheaply by replacing the faulty seal with an upgraded single-sided gasket. Even with a back rack installed, you can get this done in minutes and save yourself a trip to the dealership. ​Don't let water ruin your truck's interior, cause mold, or damage your electronics. Watch this step-by-step DIY tutorial and fix it today! ​🛒 Parts & Tools Used in this Video: ​Upgraded Single-Sided Third Brake Light Gasket: https://amzn.to/4auHOIQ ​T20 Torx Bit / Screwdriver Set: https://amzn.to/43zl7zA ​Brake Cleaner (for cleaning old adhesive): https://amzn.to/43AefSp ​Scotch-Brite Non-Scratch Pads: https://amzn.to/4gk6uaE ​🔔 If this video helped you, please hit that LIKE button and SUBSCRIBE for more truck maintenance, DIY fixes, and automotive content! ​Timestamps / Bookmarks ​Adding timestamps helps with YouTube search SEO and v ​0:00 - Intro & Silverado Walkaround ​0:15 - The Problem: Headliner Water Stains & Mold ​0:54 - The Solution: Choosing the Right Gasket ​1:34 - Tools Needed & Removing the Brake Light (T20 Torx) ​2:21 - Prying the Housing Loose & Disconnecting Wiring ​2:41 - Inspecting the Failed Factory Gasket ​3:23 - Removing the Old Gasket & Prepping the Surface ​4:04 - Installing the New Gasket Perfectly ​5:38 - Reconnecting & Reinstalling the Assembly ​6:24 - Tightening the Light (Pro-Tip: Don't Overtighten!) ​7:38 - Outro & What's Next (Headliner Detailing)