Review on Air Door Actuator - Replaces OEM 89018365, 604-106, 52402588 - Compatible with Chevrolet, Chevy, GMC 1994-2012 - Silverado 1500 and 2500, Tahoe, Sierra - HVAC Blend Control Actuator - Heater Blend Door by Mario Madden

The actuator itself is a good product and easy to install. Since our Yukon has a console, this had to be pushed to the back, which takes a bit of time but is very easy. You have to unscrew the seats if you have a console and pivot them to pull the console back. The drive is mounted in an awkward position over the tunnel, but this is a GM design. Again it was easy. - calibrate the system, but it's just a matter of pulling the fuse and turning the machine off and on a few times.