A/C Receiver Drier & Desiccant Guide for the 2011-2017 Buick Regal
If your Regal's A/C is getting weak, the problem might be more than just low refrigerant.
- The 2011-2017 Regal uses a serviceable desiccant bag inside the condenser, not a separate canister-style drier.
- This part MUST be replaced whenever the A/C system is opened for any repair to prevent moisture damage.
- Replacement is not a DIY job as it requires a professional A/C service machine to handle the refrigerant.
- Check for a related TSB (PI-0728) if your A/C system suddenly loses all its refrigerant; it may require a software update.
Is Your Buick Regal's A/C Not as Cold as It Used to Be?
When the air conditioning in your 2011-2017 Buick Regal starts to lose its edge, many people assume it just needs a refrigerant recharge. While that can be true, a common and often overlooked component is the A/C receiver drier, also known as a desiccant element. For this generation of Regal, this isn't a separate canister but a serviceable bag located inside the A/C condenser. Replacing this part is a mandatory step whenever the A/C system is opened for any repair, such as replacing a compressor or a hose. Failing to do so can lead to premature failure of the new parts and the entire system.
This is Not a Standard DIY Job
Replacing the A/C desiccant element requires specialized equipment to safely recover the old refrigerant and then recharge the system after the part is installed. This process is legally regulated and attempting it without the proper tools can damage your A/C system and be harmful. This repair should be performed by a qualified mechanic.
Choosing the Right Aftermarket Drier for Your Regal
For a part like a desiccant bag, you don't necessarily need to pay the premium for an OEM part. Quality aftermarket brands offer a reliable and cost-effective solution. The most important factor is that the part is new and sealed in its packaging until the moment of installation to prevent it from absorbing moisture from the air.
- Four Seasons: A widely available brand in the aftermarket, Four Seasons is generally considered a budget-friendly option. For a simple component like a drier, it is a perfectly acceptable choice.
- Global Parts (GPD): Similar to Four Seasons, GPD is another common aftermarket supplier. Reviews indicate they are a viable alternative to more expensive brands, especially for components like driers and condensers.
Pro Tip: Since the desiccant bag is inside the condenser, inspect your condenser for damage. 🎬 Watch a mechanic replace a damaged condenser on this platform. Road debris can puncture the condenser, causing a leak. If the condenser needs to be replaced, most aftermarket condensers come with a new desiccant bag already installed.
Known Issues, Recalls, and Service Bulletins
Searches of the NHTSA database show no recalls specifically for the A/C receiver drier on the 2011-2017 Buick Regal. However, a Technical Service Bulletin (TSB #PI-0728) was issued for some 2012-2016 models, including the Regal, for A/C that does not blow cold. The bulletin notes that an engine control module (ECM) software calibration issue could cause the high-side pressure relief to open, resulting in a loss of refrigerant. If your system is suddenly empty, this could be a cause. A GM dealer would need to perform the software update.
Estimated Replacement Costs
| Part/Service | Estimated Cost |
|---|---|
| New OEM Desiccant Element (Part Only) | $30 - $55 |
| New Aftermarket Desiccant Element (Part Only) | $26 - $41 |
| Shop Labor & System Recharge | $120 - $200 |
| Total Estimated Cost (Aftermarket) | $146 - $241 |
Note: Costs are estimates and will vary based on your location and repair shop rates.
Frequently Asked Questions
When must I replace the A/C desiccant element?
You must replace the desiccant element any time the A/C system is opened to the atmosphere. This includes replacing the compressor, condenser, evaporator, or any of the hoses. The desiccant material quickly becomes saturated with moisture from the air, making it useless if not replaced.
Can I just replace the desiccant bag instead of the whole condenser?
Yes. On the 2011-2017 Regal, the desiccant bag is designed to be serviceable. There is an access plug on the condenser that can be removed to pull out the old bag and insert a new one. 🎬 See how to swap out a desiccant bag in this video. However, if your condenser is old or has a lot of bent fins, replacing the entire condenser assembly 🎬 Watch this walkthrough of a similar GM condenser replacement. (which includes a new bag) might be a better long-term repair.
What happens if I don't replace the drier?
If you don't replace the drier after opening the system, the trapped moisture will remain. This moisture can freeze and cause blockages, or worse, mix with refrigerant to form hydrochloric acid, which will corrode metal components from the inside out, leading to very expensive failures.
Do I need to add oil when replacing the desiccant element?
A small amount of A/C oil is typically lost when replacing components. While replacing just the desiccant bag involves minimal oil loss, the proper procedure is to measure any oil from the old component and add the same amount of new, correct-type PAG oil back into the system. The shop performing the recharge will handle this.
Helpful Videos
Technical Specifications
OEM Part Numbers: 22996648 15-11051
Serviceable desiccant bag located within the A/C condenser assembly.
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.
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