Is your car's AC or heater acting up – blowing hot when you want cold, or stuck on one setting? It might be the blend door actuator. This set gives you TWO actuators, part number 604-108, which is a common replacement for a bunch of GM vehicles. It fits select models of Buick (2005-2009), Cadillac (2004-2009), Chevrolet (2004-2016), and Pontiac (2004-2008). Cross-references to a ton of OEM numbers like 10308593, 15142056, and more. These aftermarket parts are built to match or exceed OE specs, so you get reliable performance without the dealership price. We include a 1-year warranty for peace of mind. Please double-check compatibility for your specific make, model, and year before ordering. Got questions? Just message us. Let's get your climate control working right again!