2015 GMC Savana 2500 AC Isn't Working

Common Causes of AC Failure in Your 2015 GMC Savana 2500 and How to Fix Them

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Reviewed by
Bo Fader
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 2015 GMC Savana 2500 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 2015 GMC Savana 2500?

When faced with an AC malfunction in your 2015 GMC Savana 2500, start by checking the thermostat settings to ensure they are correctly adjusted. This simple adjustment can often resolve the issue if the settings were inadvertently changed. Next, inspect the air filters; dirty or clogged filters can significantly restrict airflow, leading to poor AC performance. If the filters are dirty, replacing them can enhance airflow and cooling efficiency. Following this, examine the refrigerant levels using a pressure gauge. Low refrigerant can cause the AC to blow warm air, so if levels are low, you may need to add more, but be sure to check for any leaks that could have caused the depletion. Additionally, inspect the AC system for visible leaks, looking for oily residue around connections or hoses, as these can indicate refrigerant loss. Testing the compressor is also crucial; ensure it engages properly when the AC is activated, as a malfunctioning compressor may require repair or replacement. Lastly, check the electrical connections, including fuses and relays, since faulty connections can hinder the AC's operation. By systematically following these diagnostic steps, you can effectively troubleshoot the AC issues in your GMC Savana 2500, and if problems persist, seeking professional assistance may be necessary.

What are the common causes for the AC not working in a 2015 GMC Savana 2500?

When your 2015 GMC Savana 2500's air conditioning system fails to cool, understanding the common causes can guide your troubleshooting efforts. One of the primary culprits is low refrigerant levels, which can occur due to leaks or insufficient charging, leading to inadequate cooling performance. Additionally, the AC compressor plays a crucial role in the system's operation; if the compressor's clutch is faulty or the unit itself has failed, the AC will not function effectively. Electrical issues, such as blown fuses or faulty wiring, can also disrupt the AC's operation, making it essential to check these components. Furthermore, clogged or leaking refrigerant lines can hinder the flow of refrigerant, significantly impacting cooling efficiency. Lastly, damage to the condenser or evaporator can compromise the system's overall performance. By identifying these common problems, DIYers can take the first steps toward diagnosing and potentially fixing the AC issues in their GMC Savana 2500.

How urgent is it to repair the non-functioning AC in a 2015 GMC Savana 2500?

When considering the urgency of repairing a non-functioning AC in a 2015 GMC Savana 2500, it's essential to recognize that while immediate safety may not be compromised, the discomfort caused by inadequate cooling can significantly impact driving experience, especially during hot summer months. A malfunctioning AC system can lead to distractions that affect concentration on the road, potentially increasing the risk of accidents. Moreover, if the AC is not blowing cold air, it may indicate underlying issues such as low refrigerant levels or a dirty evaporator, which, if left unaddressed, could escalate into more severe problems requiring costly repairs. Additionally, a faulty blower motor, while easier to diagnose, still necessitates prompt attention to restore comfort and functionality. Therefore, addressing AC issues in a timely manner not only enhances driving comfort but also helps prevent further damage to the system, ensuring that your vehicle remains in optimal condition for the long haul.

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