604-106, 89018365, 52402588 HVAC Blend Door Actuator Replacement for , , GMC, Silverado Features: Compatible with part numbers: 89018365, 604-106, 52402588, 16163982, 52402598, 52402612. Direct replacement for the factory blend door actuator on your vehicle. Recalibration of the HVAC system is recommended after installation. Replaces actuators in , GMC, Cadillac, Buick, Pontiac, and Hummer models including Silverado 1500, 2500 HD, GMC Sierra 1500, 2500 HD (1999–2013), Tahoe, Suburban 1500, 2500, GMC Yukon, Yukon XL, Cadillac Escalade (2000–2014), Buick Century, Pontiac Grand Prix, Bravada, Hummer H2 (2003–2009), and other compatible models. For full fitment details, refer to the specification list below. Quick and simple installation on both driver and passenger sides. Proper fitment ensures reliable operation. Designed to meet performance and noise test standards to ensure smooth motor operation without clogging or abnormal sounds. Equipped with a reinforced internal circuit board that resists heat, corrosion, and vibration for improved durability. Specifications: Replaces Part Numbers: 89018365, 604-106, 52402588, 16163982, 52402598, 52402612 Fits the Following Vehicles: Corvette 1997–2004 Blazer 1998–2002 S10 1998–2002 Silverado 1500, 1500 HD, 2500, 2500 HD 1999–2013 Silverado 3500 2001–2006 Silverado 3500 HD 2007–2014 Silverado 1500 HD, 2500 HD, 3500 Classic 2007 Tahoe 2000–2014 Suburban 1500, 2500 2000–2014 Trailblazer & EXT model 2002–2003 GMC Jimmy 1998–2001 GMC Sonoma 1998–2002 GMC Sierra 1500, 1500 HD, 2500, 2500 HD 1999–2013 GMC Sierra 3500 2001–2006 GMC Sierra 3500 HD 2007–2014 GMC Sierra 1500 HD, 2500 HD, 3500 Classic 2007 GMC Yukon 2000–2014 GMC Yukon XL 2000–2014 GMC Envoy & XL model 2002–2003 Cadillac Fleetwood 1994–1996 Cadillac Seville 1998–2004 Cadillac Escalade 2000–2014 Cadillac Escalade ESV & EXT 2003–2014 Package Included: 1 x Blend Door Actuator