cciyu Heater Blower Motor Resistor Fit Buick Chevy GMC Isuzu Olds w/Manual A/C-RU377X Cross Reference: RU377X 973-008 89019100 15373437 15415789 89018439 89018604 973-008 Function: To solve HVAC Stop working To solve Can't adjust the Air Volume To solve Get Warning in dashboard To solve Fan only works in one direction Fitment: ( Only for your reference ) All the following is without Automatic Temperature Control Please Attention!!! 2004-07 Buick Rainier Blower Motor Resistor 2002-09 Chevy Trailblazer Blower Motor Resistor 2003-05 Chevy Trailblazer EXT Blower Motor Resistor 2002-09 GMC Envoy Blower Motor Resistor 2002-06 GMC Envoy XL Blower Motor Resistor 2004-05 GMC Envoy XUV Blower Motor Resistor 2003-08 Isuzu Ascender Blower Motor Resistor 2002-04 Olds Bravada Blower Motor Resistor Note: - Fits models with Manual Air Conditioning only,Does NOT fit models with Automatic Temperature Control (ATC) - Please check your part number and make sure before placing order! - If you have any questions, please contact us for more details. Pacakge Includes: 1 x Blower Motor Regulator Resistor