Guide to the 2011-2017 Buick Regal HVAC Blower Motor Control Module
If your Regal's cabin fan is acting up, this guide explains the likely cause and how to choose the right replacement part.
- This part is a Blower Control Module on Regals with automatic climate control, not a simple resistor.
- To prevent repeat failure, always replace the Blower Motor at the same time as the Control Module.
- A fan that only works on the 'High' setting is the most common symptom of a bad module.
- Always inspect the wiring connector for melting; kits from brands like Dorman often include a replacement harness.
Is it a Resistor or a Module?
It's an important distinction for the 2011-2017 Buick Regal. While often called a "blower motor resistor" generically, models with automatic climate control use a more sophisticated Blower Motor Control Module. This part offers variable fan speeds, not just 3 or 4 fixed settings. If your fan speed control is a simple knob with distinct clicks for each speed, you have a resistor. If you have a digital display and buttons for fan speed, you have a control module. This guide covers the more common control module but the symptoms and repair advice are nearly identical for both.
Common Symptoms of a Failing Blower Control Module
When the blower control module starts to fail, it can cause several frustrating issues. You might notice one or more of these signs:
- Fan Only Works on High Speed: This is the most classic symptom. The high-speed setting often has a separate circuit that bypasses the module, so it's the only speed that works when the module fails.
- No Fan at All: The module can fail completely, leaving you with no airflow from the vents at any speed.
- Erratic or Random Fan Speed: The fan may speed up or slow down on its own, without you touching the controls.
- Fan Stays On: A shorted module can cause the blower fan to run continuously, even after you've turned the car off and removed the key, which will drain your battery.
- Burning Plastic Smell: A strong burning odor from the vents is a serious sign that the module or its wiring connector is overheating and melting. If you smell this, stop using the HVAC system until it's repaired. 🎬 Watch: A detailed breakdown of these common failure symptoms.
The Real Cause of Failure
The #1 reason a new blower control module fails is because the original problem was not the module itself, but an old blower motor. As blower motors age, they draw more electricity to spin. This extra electrical current overloads and burns out the control module. To avoid having to do the job twice, it is strongly recommended to replace the blower motor and the control module at the same time.
Choosing the Right Aftermarket Part
Several aftermarket brands offer replacement modules. They generally fall into different quality tiers.
- Premium Aftermarket (e.g., Standard Ignition, Four Seasons): These brands have a long reputation for producing quality electronic and HVAC components that meet or exceed original specifications. They are a reliable choice for longevity.
- Standard Aftermarket (e.g., Dorman, Global Parts): Dorman is a widely available brand known for creating parts that are direct-fit replacements. A major advantage is that their kits often include a new wiring harness pigtail, which is crucial if your original connector has melted.
- Economy Brands: While the lowest price is tempting, quality can be inconsistent. Given that the blower motor itself is often the root cause, pairing a new, quality motor with an economy module might lead to premature failure.
When comparing, look for kits that include a new wiring connector. Even if yours looks okay, replacing it is good insurance against future problems.
| Part Type | Estimated Cost |
|---|---|
| New OEM (GM Genuine) | $80 - $120 |
| New Aftermarket | $56.81 - $114.79 |
| Shop Labor | $60 - $150 |
Pro Tip: Check the Cabin Air Filter
While you're working under the dash, check and replace the cabin air filter if it's dirty. A clogged filter restricts airflow, which can cause the blower motor to work harder and the control module to overheat.
Frequently Asked Questions
Is this a difficult part to replace myself?
No, this is generally considered an easy DIY job. It typically requires removing the glove box or a panel under the passenger-side dashboard for access. Basic hand tools are usually all that's needed. The estimated time is under an hour.
🎬 Watch: A quick guide on replacement steps and repair costs.Why did my fan stop working right after I replaced the module?
This almost always means the blower motor itself is bad and drawing too much current, which immediately burned out the new module. It's also possible the wiring connector is melted or corroded, creating high resistance. Always inspect the connector and replace the motor and module together for a lasting repair.
Are there any recalls for this part on my Buick Regal?
No, there are no specific recalls from the NHTSA for the HVAC blower motor control module or resistor on the 2011-2017 Buick Regal.
Should I buy an OEM or aftermarket module?
For this part, a quality aftermarket module from a reputable brand like Standard Ignition, Four Seasons, or a Dorman kit that includes the harness is a very cost-effective and reliable option. OEM (GM Genuine Parts/ACDelco) is always a guaranteed fit but comes at a higher price.
Helpful Videos
Technical Specifications
OEM Part Numbers: 13503201 15-81931 22807122
For vehicles with automatic climate control, this is a variable speed control module. For manual climate control, it is a multi-speed resistor. The part is located in the passenger footwell area, mounted to the HVAC case.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Buick Regal: