15-81773 Blower Motor Control Module Resistor Kit

15-81773 Blower Motor Control Module Resistor Kit

Key Features

• Direct-fit replacement for the original equipment blower motor control module.
• Restores automatic HVAC fan speed control for all settings.
• Includes both the control module and a replacement wiring harness pigtail.
• Engineered with an integrated aluminum heat sink for effective thermal management and durability.

Replaces / Cross-Reference Part Numbers

• ACDelco: 15-81773, 15-80567
• GM: 19260762, 89019088
• Dorman: 973-405

Compatibility & Fitment

• NOTE: Fits models equipped with Automatic Temperature Control (ATC) systems only. Does not fit manual climate controls.
• Buick: Rainier (2004-2007)
• Cadillac: Escalade, Escalade ESV, Escalade EXT (2002-2006)
• Chevrolet: Avalanche 1500 & 2500 (2003-2006), Silverado 1500, 2500, 3500 (2003-2007 Classic), Suburban 1500 & 2500 (2003-2006), Tahoe (2003-2006), Trailblazer & Trailblazer EXT (2002-2009)
• GMC: Envoy & Envoy XL, XUV (2002-2009), Sierra 1500, 2500, 3500 (2003-2007 Classic), Yukon & Yukon XL 1500, 2500 (2003-2006)
• Hummer: H2 (2003-2007)
• Isuzu: Ascender (2003-2008)
• Oldsmobile: Bravada (2002-2004)

When to Replace

• HVAC fan only operates on the highest speed setting.
• Blower fan speed cannot be adjusted or works intermittently.
• No air is blowing from the vents even when the fan is audible.
• A burning plastic smell is present near the passenger side dashboard.

Installation Tips

• The module is typically located in the passenger-side footwell, mounted to the HVAC housing.
• Always disconnect the vehicle's negative battery terminal before starting the installation.
• Use the included wiring harness to replace the original connector, as overheating and corrosion on the original harness is a common point of failure.
• Before installing the new module, inspect the blower motor. A worn or failing motor can draw excessive current and cause repeated module failure.