2020 Chevrolet Blazer AC Isn't Working

Common Causes of AC Malfunctions in Your 2020 Chevrolet Blazer and How to Fix Them

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Reviewed by
Andrew Hajjar
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 Chevrolet Blazer 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 steps to diagnose the AC issue in a 2020 Chevrolet Blazer?

To effectively diagnose the AC issue in your 2020 Chevrolet Blazer, start by checking the air filters, as dirty or clogged filters can significantly restrict airflow and diminish cooling performance. Next, inspect the refrigerant levels; low levels may indicate a leak, which is crucial to address for optimal cooling. Following this, examine the AC compressor, as a malfunctioning unit can lead to inadequate or no cooling at all. It’s also important to test the thermostat, since a faulty one can disrupt the AC system's functionality. Additionally, look for any visible leaks in the AC system, as these can severely impact efficiency. Finally, assess the electrical components to ensure all connections are secure and functioning properly, as electrical issues can also hinder the AC system's performance. By systematically following these steps, you can effectively narrow down the potential causes of your AC problems and take the necessary actions to restore comfort in your vehicle.

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

When your 2020 Chevrolet Blazer's AC stops working, it's crucial to understand the common problems that could be at play. One of the primary issues is low refrigerant levels, which can significantly hinder the system's ability to cool the air effectively. If the refrigerant is low, it may indicate a leak or that the system hasn't been properly charged. Another potential culprit is a faulty compressor; this component is essential for circulating refrigerant throughout the system, and if it fails, you won't get any cold air. Additionally, electrical issues such as blown fuses or damaged wiring can disrupt the AC's operation, leading to a complete system failure. Clogged or leaking refrigerant lines can also impede the flow of refrigerant, further affecting performance. Lastly, a malfunctioning thermostat may fail to regulate the temperature correctly, resulting in inadequate cooling. While some of these issues can be diagnosed and addressed through DIY methods, it's often best to consult a qualified mechanic to ensure a thorough and accurate repair, keeping your Blazer's AC system in optimal condition.

How urgent is it to address the non-functioning AC in a 2020 Chevrolet Blazer?

When it comes to a non-functioning AC in your 2020 Chevrolet Blazer, addressing the issue promptly is crucial for both comfort and safety. Driving without a working air conditioning system in hot weather can lead to significant discomfort and even health risks, particularly during extreme heat. Moreover, a malfunctioning AC can detract from the overall driving experience, making it less enjoyable and potentially distracting, which can compromise your focus on the road. Additionally, it's important to recognize that a faulty AC may indicate underlying problems within the vehicle's cooling system. Ignoring these symptoms could result in more extensive damage and costly repairs down the line. By prioritizing the repair of your AC, you not only enhance your driving comfort but also prevent further wear and tear on the system, ultimately saving you money in the long run. Therefore, if you find yourself facing AC issues, it is advisable to take action sooner rather than later to ensure a safe and pleasant driving experience.

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