Hey, if your car's running weird or the check engine light's on, it might be the coolant temperature sensor. This CIOM kit includes both the sensor AND the pigtail connector, which is super handy because sometimes the wiring gets brittle. It fits a ton of models—think Buick LaCrosse (2008-2015), Chevy Silverado (1999-2014), Impala, Equinox, Tahoe, Suburban, GMC Sierra, Yukon, even Saab 9-7x and Saturn Vue from around 2005-2009. Replaces a bunch of OEM numbers like 213-4514, 19236568, 12608814, and more. The sensor itself is made from sturdy metal for accurate readings and long life. Installation’s pretty straightforward: just unplug the old one, swap in the new sensor and connector if needed. They even have a YouTube video if you get stuck. Comes with professional after-sales support too, so you're covered. Good for DIYers or mechanics looking for a reliable, direct-fit part.