Shop GMC C+K 1500-3500 Pu Blower Motor Resistor Location & GMC C+K 1500-3500 Pu Blower Motor Speed Controller. Maintaining the blower motor resistor in your GMC C+K 1500-3500 series is key to ensuring a comfortable cabin environment. Regularly inspect for corrosion or overheating signs, as these are clear indicators that a replacement may be necessary. To extend its lifespan, ensure that cabin filters are clean to prevent undue stress on the system. When selecting a new resistor, it's crucial to match the OEM specifications for your specific model to guarantee seamless functionality. Ceramic resistors offer enhanced durability and longevity, while standard ones are cost-effective. Always prioritize high-quality materials, and during installation, a secure connection is vital to avoid future electrical issues. Choose wisely to enhance performance and maintain the integrity of your vehicle's Hvac system.