YCT Blower Control Module AC Heater Blower Resistor for GM Trucks SUVs - Direct-Fit 15-80567 Restores Fan Speeds

YCT AC Blower Control Module (heater blower resistor) 15-80567 restores reliable fan-speed control for compatible GM trucks and SUVs.

If your vehicle’s HVAC fan only works on certain speeds or has stopped responding to the blower switch, this YCT replacement module offers a direct-fit fix engineered to match the original resistor’s electrical and mounting points. Designed for use in a range of GM models including Chevy Silverado, Trailblazer, Cadillac Escalade, GMC Envoy, Sierra, and Buick Rainier, this unit replaces worn or damaged blower resistors and modules to re-establish full speed range and consistent airflow.

How does this YCT blower resistor restore fan speeds?

The blower resistor manages electrical current to the blower motor so the fan can run at multiple speeds. Replacing a faulty resistor with this YCT unit reintroduces proper resistance values and secure wiring connections, which lets the blower motor respond accurately to the dash controls.

• Direct-fit replacement for common OEM part numbers (e.g., 15-80567, 89018778)
• Restores low, medium and high fan-speed settings
• Replaces blown resistors or corroded connector terminals
• Maintains factory mounting and harness compatibility

Which vehicles and part numbers does this module fit?

This resistor module is designed to match factory fitment across several GM platforms from early-to-mid 2000s to later models that share the blower housing layout. Verify your vehicle’s part number before ordering to ensure compatibility with the electrical plug pattern and mounting holes.

• Compatible models: Chevy Silverado, Trailblazer, Cadillac Escalade
• Also fits: GMC Envoy, Sierra, Buick Rainier
• Cross-reference part numbers: 1580567, 15-80567, 4P1516, 89018778
• Check OEM numbers listed on the product for exact match

What should I expect during installation and performance?

Installation is straightforward for anyone comfortable with basic vehicle electrics: access the blower housing, unplug the old resistor, remove mounting screws, and swap in the YCT unit. Once installed, expect consistent blower responses across speed settings and reduced intermittent failures caused by worn resistive coils or bad connections.

• Simple bolt-and-plug installation—no special tools required
• Replaces the original part without modification
• Improves reliability compared to aged or damaged resistors
• Test fan operation through all speed positions after installation

Will this fix other HVAC issues like weak airflow or strange noises?

This module specifically addresses electrical control of the blower motor speeds; it will not repair mechanical issues such as a failing blower motor, clogged cabin air filter, or airflow obstructions. If you hear grinding or sustained unusual sounds, inspect the blower motor and housing for debris or wear in addition to replacing the resistor.

• Fixes electrical speed control problems, not mechanical motor failures
• Check cabin filter and blower motor if airflow remains weak
• Replace faulty blower motor if noise or loss of rotation persists
• Combined maintenance ensures full HVAC performance

Who is this for: This YCT blower control module is intended for DIY vehicle owners, independent mechanics, and service shops working on compatible GM trucks and SUVs that need a reliable, direct-fit replacement for a failing blower resistor. If you want to restore full fan-speed functionality without replacing the entire HVAC assembly, this part delivers a cost-effective solution that matches common OEM part numbers and installs with minimal effort.