Locate GMC Savana 2500 Blower Motor Speed Control Module. Replace GMC Savana 2500 Blower Motor Resistor Replacement & GMC Savana 2500 Blower Motor Resistors. Maintaining the blower motor resistor in your GMC Savana 2500 is crucial for ensuring a comfortable cabin environment. Regularly check for corrosion or overheating, which are primary indicators that a replacement is imminent. To extend its lifespan, ensure that the cabin air filter is replaced periodically, preventing debris from clogging the system. When selecting a new resistor, opt for ceramic ones if available, as they typically offer better durability and performance under high temperatures. During installation, secure connections tightly to avoid any potential electrical issues, and choose a part that matches OEM specifications to guarantee compatibility and peak performance. Keep your vehicle's ventilation system running smoothly with these savvy maintenance and selection tips.