2020 GMC Acadia AC Isn't Working

Common Causes of AC Malfunctions in Your 2020 GMC Acadia and How to Fix Them

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Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
37% chance it's the
Refrigerant Leak
0%
21% chance it's the
Climate Control Electrical Issue
0%
12% chance it's the
AC Compressor
0%
30% chance it's
Something else
The most common reasons a 2020 GMC Acadia AC isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
  • Refrigerant Leak: A refrigerant leak can occur due to damaged hoses, seals, or connections, resulting in decreased cooling efficiency in the air conditioning system.
  • Climate Control Electrical Issue: A faulty climate control module or a blown fuse could be causing the electrical issues in the climate control system.
  • AC Compressor: A faulty AC compressor may be due to a lack of lubrication, electrical issues, or internal mechanical failure, resulting in inadequate cooling performance.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the initial diagnostic steps to take when the AC isn't working in a 2020 GMC Acadia?

When your 2020 GMC Acadia's AC isn't functioning properly, start by checking the thermostat settings to ensure they are correctly adjusted to a cool temperature, as this is often a simple oversight. Next, inspect the air filters; dirty or clogged filters can significantly hinder airflow, so replacing them can enhance the system's performance. After that, turn on the AC and listen for any unusual noises, which may indicate issues with the compressor or other components. It's also essential to verify the refrigerant levels, as low levels can lead to inadequate cooling; if necessary, consider recharging the system. Additionally, look for any visible signs of leaks, such as oily residue around hoses, which can signal a refrigerant loss. Finally, examine the AC compressor itself, as a malfunctioning compressor can prevent the system from cooling effectively. By following these steps in order, you can systematically diagnose and address the AC issues in your GMC Acadia, potentially saving time and money on repairs.

What are the common problems that could cause the AC to stop working in a 2020 GMC Acadia?

When the air conditioning system in your 2020 GMC Acadia fails to cool, it can be frustrating, but understanding the common problems can empower you to tackle the issue. One of the primary culprits is low refrigerant levels, which can occur due to leaks or insufficient charging, preventing the system from achieving optimal cooling. Another frequent issue is a faulty compressor; if the compressor isn't functioning correctly, it won't circulate the refrigerant effectively, leading to inadequate cooling. Additionally, electrical problems such as blown fuses or damaged wiring can disrupt the AC's operation, making it essential to check these components. A clogged or leaking condenser can also hinder the system's performance, as it plays a crucial role in dissipating heat. Lastly, a malfunctioning blower motor can result in weak airflow from the vents, making it feel like the AC isn't working at all. By identifying these common problems, you can take the first steps toward diagnosing and potentially fixing the AC issues in your GMC Acadia.

How urgent is it to repair the non-functioning AC in a 2020 GMC Acadia?

When faced with a non-functioning AC in your 2020 GMC Acadia, addressing the issue promptly is essential for several reasons. First and foremost, a working AC system is vital for passenger comfort, especially during sweltering summer months or on long road trips. Without it, occupants may suffer from discomfort and even health risks due to excessive heat. Additionally, the safety of everyone in the vehicle can be compromised; a malfunctioning AC can distract the driver and create an uncomfortable environment, particularly for those sensitive to heat. Moreover, delaying repairs can lead to more severe mechanical issues, potentially resulting in costly fixes down the line as the AC system may strain other vehicle components. Lastly, maintaining a fully operational AC system is crucial for preserving the resale value of your Acadia; prospective buyers are more likely to be attracted to a vehicle that has been well-maintained and is in good working order. Therefore, it is advisable to prioritize the repair of your AC to ensure comfort, safety, and the longevity of your vehicle.

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