YCT Blower Control Module Resistor for Chevy/GMC/Cadillac/Buick – 15-80567 Direct-Fit, Restores Multi-Speed HVAC

The YCT AC Blower Control Module (blower resistor) 15-80567 restores variable fan speeds for HVAC systems on select Chevy, GMC, Cadillac and Buick trucks and SUVs.

If your vehicle’s fan is stuck on one speed, not responding, or operating only at full blast, this direct-fit replacement resistor/module is designed to bring back multi-speed blower control. Engineered to match OE electrical and mounting points, the YCT unit replaces worn or failed blower resistors used in several GM platforms so you can quickly return heating and cooling performance without reprogramming or adapter harnesses.

Which vehicles and part numbers does this YCT blower resistor replace?

This module is built to be compatible with a range of GM models and several cross-reference part numbers. It covers common part numbers used by dealerships and aftermarket suppliers so you can match it to your vehicle’s original component.

• Compatible models: Chevy Silverado, Trailblazer; GMC Sierra, Envoy; Cadillac Escalade; Buick Rainier.
• Cross-reference numbers: 15-80567, 1580567, 4P1516, 89018778 and others.
• Fits both older and mid-2000s GM HVAC assemblies where the original resistor design is used.

How simple is the installation and what tools are needed?

Installation is straightforward for a basic DIYer and requires only common hand tools. The unit uses the factory mounting points and electrical connector, so no cutting, splicing, or programming is required under normal circumstances.

• Typical tools: screwdriver set, socket wrench, and possibly trim removal tool.
• Mounts into the HVAC housing; plug-and-play electrical connector mirrors the original.
• Expect 20–45 minutes for most vehicles when the blower motor cover is accessible.

What improvements and reliability can I expect with this replacement?

The YCT module restores the blower’s multi-speed functionality and reduces intermittent or total fan loss caused by failed resistors. It’s constructed to handle typical in-cab conditions and matches the original electrical resistance values for consistent airflow control.

• Restores all intended fan speed settings for comfort control.
• Designed to meet factory fit and electrical specifications for stable operation.
• Helps prevent overheating and intermittent fan operation compared to failing resistors.

Will this part void warranties or require programming?

This is a direct replacement component and generally does not require any electronic reprogramming. Installing an aftermarket blower resistor typically does not affect vehicle computer warranties, but check vehicle-specific service policies if under dealer warranty.

• No calibration or ECU programming required in normal installations.
• Retains factory connector and mounting to keep the HVAC system intact.
• Confirm warranty terms with your dealer when under active factory coverage.

Who is this for: This YCT blower control module is intended for vehicle owners, independent mechanics, and DIY enthusiasts who need a dependable replacement for a failed or intermittent blower resistor on compatible GM trucks and SUVs. It suits anyone seeking a cost-effective, direct-fit repair to restore full HVAC fan speed control without modifying factory wiring or buying dealer-only parts.