VEHICLE APPLICATIONS: 2013-2017 for Buick Enclave 3.6L 2010-2013 for Chevrolet Silverado 1500 4.3L 2010-2013 for Chevrolet Silverado 1500 4.8L 2010-2013 for Chevrolet Silverado 1500 5.3L 2010-2013 for Chevrolet Silverado 1500 6.0L 2010-2013 for Chevrolet Silverado 1500 6.2L 2011-2014 for Chevrolet Silverado 2500 HD 6.0L 2011-2014 for Chevrolet Silverado 2500 HD 6.6L 2011-2014 for Chevrolet Silverado 3500 HD 6.0L 2011-2014 for Chevrolet Silverado 3500 HD 6.6L 2013-2017 for Chevrolet Traverse 3.6L 2017 for GMC Acadia 2.5L 2013-2017 for GMC Acadia 3.6L 2010-2013 for GMC Sierra 1500 4.3L 2010-2013 for GMC Sierra 1500 4.8L 2010-2013 for GMC Sierra 1500 5.3L 2010-2013 for GMC Sierra 1500 6.0L 2010-2013 for GMC Sierra 1500 6.2L REFERENCE OEM PART NUMBER: 22803996, 22816162, BM 9176, 75735, 75759, PM9176, R2031-120667-TYC COMMON FAULTS AND ANALYSIS: 1.Blower fan does not move: The fan is used for a long time, which causes the friction coefficient between the rotor and the bearing to increase, and the rotor is blocked or even stuck, causing the coil to be overheated and damaged. 2.The fan does not turn, but there is a loud buzz: This fault is most common on capacitor-activated blowers, mainly due to lack of capacity or severe leakage of capacitors, or damage to the startup group