Chevy Climate Control Reset

A Chevy climate control reset is nearly as simple as restarting your computer. This guide from Jerry will show you how it’s done.
Written by John Davis
Reviewed by Melanie Reiff
Problems with your climate control system can cause issues like hot air blowing out of one vent and cold air from another. If you're experiencing symptoms like this, you may need to reset the climate control system in your Chevy by removing and replacing the HVAC/ECAS fuse. 
Chevys are American classics, and many average car owners and enthusiasts swear by their Chevrolet vehicles. But Chevy cars are also known for their less-than-ideal reliability. The HVAC system in your Chevy routinely needs service—sometimes, the climate control system can completely malfunction.
You can take your car to the shop for an expensive
, or you can reset the system yourself by following a few simple steps.
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Chevy climate control reset instructions

Many things can cause your Chevy climate control system to fail, but an electrical problem is one of the most common issues. This could cause symptoms such as cold air blowing out of the driver-side air vents while warm air blows out the passenger side. The most straightforward way to resolve this issue is by resetting the car's HVAC system. 
Fortunately, you can easily do this in your garage or driveway. It requires essentially no tools, and the steps are easy enough for a complete automotive novice to follow. Basically, it's the car version of resetting your computer. 
Step 1: Park your car in a safe spot and turn the engine off
Step 2: Pop the hood and locate the car's fuse box. It's usually located near the battery and looks like a small black plastic container. Check your vehicle owner's manual if you're unsure of the location.
Step 3: Find and carefully remove the HVAC fuse. Either your owner's manual or the inside of the fuse box's lid should contain a diagram of the fuses. Next, locate the HVAC fuse and gently pull it up and out of the box.
Step 4: Wait at least 10 seconds before carefully reinstalling the fuse. While you wait, visually inspect the fuse for any damage and to ensure it's not blown. Be very gentle when reconnecting the fuse—a fuse puller or pair of flat-nose pliers can help with this step. 
Step 5: Turn the car on, and don't touch any buttons or controls. You must wait at least 40 seconds for the climate control system to calibrate itself. 
After completing these steps, your Chevy's climate control system should reset. However, it's time to investigate the issue further if you're still experiencing problems with the A/C.

Other reasons your Chevy A/C isn't working

Often, resetting your car's climate control system can resolve the issue. However, this isn't always the case. If your reset attempt fails to fix your car's issue, you may have another problem on your hands.
Here are a few more things that can cause issues with your Chevy's climate control system.

Malfunctioning HVAC fuse

If the fuse is faulty, merely removing and reinstalling the HVAC fuse won't fix the issue. Instead, when you pull the fuse, look closely at the prongs and the body for damage or corrosion. If you notice any problems, replace the fuse and follow steps 4-5

Blend door actuator malfunction

Another common culprit of problems with the air conditioning system is a damaged blend door actuator. Also known as the HVAC actuator, the blend door actuator is a small motor that regulates the vents that govern the climate control system. 
If you have a faulty blend door actuator, you might experience cold air blowing on one side of the car and hot air on the other. You'll need a mechanic to diagnose and fix this issue before your climate control system will work again. 

A/C refrigerant leak

A refrigerant leak is one of car's most common causes of A/C problems. If your Chevy's air conditioning gradually gets warmer and warmer, you may need an
A/C recharge

A/C compressor failure

At the heart of your Chevy's HVAC system is an
A/C compressor
. Along with a condenser, it cools the air pumped into your car's cabin. Your A/C compressor might malfunction if the belt breaks, the pulley seizes up, or its controlling relay fails
If the A/C compressor stops working, your car's HVAC system will not function properly.

Faulty A/C control module

One more electrical component that can cause your Chevy's climate control system to malfunction is the A/C control module. This piece is located behind the A/C controls on your dashboard. If you have a faulty A/C control module, you'll have to remove the instrument panel on the dash to access and replace the module. 

How to diagnose a Chevy climate control malfunction

The reasons listed above are only a few potential causes of climate control problems in your Chevy. The unfortunate reality is many things can cause HVAC issues in your car, including a loose connector, bad wiring harness, faulty blower motor, and even a basic issue with the cabin air filter
If you have issues with your car's HVAC system, you'll want to fix the problem at its root. That often means extensive diagnostic work to discover the culprit. If your car has a check engine light on, the first step should always be checking the codes with an OBDII scan tool—many of these tools have advanced features that will troubleshoot your car's systems even if a code is not present.
You can also take your car to a repair shop and let the professionals handle it. Be sure to find a mechanic with the proper certifications and training in HVAC repairs because A/C refrigerant is toxic and working with it requires expert knowledge. 
MORE: How long do HVAC systems last?

How to keep Chevy insurance costs low

Chevys can make great cars, but unfortunately, they haven't always been known as the most reliable vehicles on the road. One great way to ensure you minimize wear and tear and prolong your Chevy's life is by keeping up with a
routine maintenance schedule
. But a quality insurance plan is another crucial form of protection for your car.
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