Ok I hope I do not jinx myself, I have a 2020 GMC Sierra SLT 3400 miles with back slider window E9, Truck was made in Mexico build date 1/20, I have used the slider window many times, I looked for hair line cracks and did not find any, Also removed the rear seat belt cover and inspected, I went out a little while ago and soaked the window for a good 5 min and inspected again and no leaks, would it be possible I got one that may not leak or is it inevitable it will leak? Jus wundering if I should pull the spoiler and do the bead of seal across the top... I would jus thought that all these trucks sold that if all leaked there would be a recall or class action suit... Thanks for your replies in advance....