Replacement Air Door Actuator - The air door actuator controls the flow and temperature of air into the interior of the vehicle. This part commonly fails on Chevy Silverado and Chevy Tahoe models and results in inconsistent or incorrect AC temperatures inside the vehicle REPLACES PART# 89018365, 604-106, 52402588, 16163982, 52402598, 52402612 - While this is not a genuine GM part it is a direct replacement for the factory blend door actuator. Fits popular Chevy models including - 2002 Silverado , Silverado 1999, Chevy Tahoe, 2001 2500 HD and more, see below for all models FITS THE FOLLOWING VEHICLES - 1999-2012 Chevy Silverado 1500, Chevy Silverado 2500 HD, Chevy Tahoe, GMC Sierra 1500. Replaces part # 89018365, 604-106, 52402588, 16163982, 52402598, 52402612 This blend door or air door actuator features a redesigned housing to insure it lasts longer than the factory blend door on your Chevy. The blend door actuator also features a more rugged internal circuit board which resists heat, corrosion, and vibration. LIFETIME WARRANTY - This air door actuator comes complete with a lifetime warranty. If the part ever fails simply contact us for a replacement.