Universal Air SW9971C HVAC Blower Motor Resistor - Front

HVAC Blower Motor Resistor for GM Applications

Universal Air SW9971C is a blower motor resistor for vehicles with manual or automatic HVAC control configurations listed below. It helps regulate blower motor speed so the cabin fan operates through the selected settings on compatible Chevrolet, GMC, Buick, Cadillac, Pontiac, Saab, Isuzu, and Oldsmobile models.

Key Features

• Universal Air Blower Resistor line
• Part number SW9971C
• HVAC blower motor resistor for multi-speed fan control
• Compatible with select vehicles from 2002-2016
• Applications include Chevrolet Impala, Trailblazer, Silverado, Tahoe, Suburban, and related GM platforms
• Some applications require a pigtail connector or are listed for vehicles with Automatic Temperature Control

Detailed Description

This HVAC blower motor resistor is used in the cabin air system to manage blower motor speed across the available fan settings. Universal Air SW9971C covers a wide range of GM trucks, SUVs, and passenger cars, including 2006-2016 Chevrolet Impala, 2003-2006 Chevrolet Silverado 1500, and 2003-2006 GMC Yukon applications, along with additional Buick, Cadillac, Pontiac, Saab, Isuzu, and Oldsmobile models. The Universal Air Blower Resistor line is organized for direct replacement use on the specific vehicles listed in the fitment data, including applications noted with pigtail connector requirements or Automatic Temperature Control.

This part cross-references no additional part numbers in the provided data.

What It Helps Fix

• Blower fan stuck on one speed
• Loss of one or more cabin fan speeds
• Intermittent HVAC blower operation
• No airflow from the vents when the fan switch is selected
• Erratic blower speed control in the dash HVAC system

Installation Notes and Tips

• Verify the exact year, make, model, and HVAC configuration before ordering.
• Match applications that specify pigtail connector or Automatic Temperature Control.
• Inspect the blower motor connector and wiring for heat damage before installing the new resistor.
• Confirm the replacement location in the HVAC case matches the vehicle listing.

Quality Assurance

Universal Air SW9971C is cataloged as a dedicated HVAC blower motor resistor for the listed GM and related applications, supporting accurate fitment selection for repair work on Chevrolet Impala, Silverado, Trailblazer, and similar models.