2013 GMC Sierra 3500 HD AC Isn't Working

Common Causes of AC Failure in Your 2013 GMC Sierra 3500 HD and How to Fix Them

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Reviewed by

Devin Cabugcal

Written by RepairPal Car Genius

Updated January 14, 2025

37% chance it's the

Refrigerant Leak

21% chance it's the

Climate Control Electrical Issue

12% chance it's the

AC Compressor

30% chance it's

Something else

The most common reasons a 2013 GMC Sierra 3500 HD 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 short circuit in the wiring can disrupt the electrical signals needed for proper operation of 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 best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2013 GMC Sierra 3500 HD climate control issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

How urgent is it to repair the non-functioning AC in a 2013 GMC Sierra 3500 HD?

Addressing the non-functioning AC in your 2013 GMC Sierra 3500 HD should be treated as a priority, especially when considering the discomfort and health risks associated with driving in extreme heat. A malfunctioning AC system can lead to a stifling cabin environment, which not only detracts from your driving experience but can also pose serious safety concerns, particularly during long trips or in high-temperature conditions. Common issues such as refrigerant leaks, electrical problems, or compressor failures can escalate if left unattended, potentially resulting in more extensive and costly repairs. For instance, a small refrigerant leak may go unnoticed until the AC system fails completely, leaving you without cooling when you need it most. By promptly checking components like the cabin air filter, refrigerant levels, and the compressor, you can mitigate these risks and ensure your vehicle remains comfortable and safe to drive. Therefore, it is advisable to tackle AC repairs as soon as symptoms arise to maintain the vehicle's performance and your well-being on the road.

Related 2013 GMC Sierra 3500 HD Problems

Read about related problems experienced by other GMC Sierra 3500 HD drivers like you.

Nissan Rogue AC compressor failure causing hot air from air conditioner

Some Nissan Rogue owners report experiencing issues with their AC compressor, leading to hot air blowing from the air conditioner. These problems often stem from a faulty compressor that can cause the air conditioning system to malfunction, resulting in hot air instead of cool air from the vents. Common signs of AC compressor failure include unusual noises and a noticeable lack of cooling. If the compressor fails, it compromises the entire air conditioning system's functionality, significantly impacting the vehicle's cooling efficiency.

2 model years affected

Avg Mileage: 156,500

2 others reported problem

1 comment

Updated Pressure Cycling Switch Available to Fix Frozen AC Evaporator

The AC evaporator may freeze after extended use of the air conditioner. The output may feel low due to the restricted evaporator. Once the ice buildup melts, the AC operates normally. A revised low pressure cycling switch is available which may fix this concern.

4 model years affected

Avg Mileage: 167,750

6 others reported problem

0 comments

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