How to Reset GMC Acadia AC? A Must-Read Discussion.

How to Reset GMC Acadia AC? Before we come on to the AC issue, let’s see what the main features of GMC Acadia are and why it is so popular.

Later in this article, we will find out the causes for the AC malfunctioning and fix those issues.

Why GMC Acadia?

The Denali version of the Acadia is a very pleasurable three-row SUV. The ride and handling are both smooth and calm. In testing, the 3.6-liter V6 engine returns 19 mpg. The stock engine is a turbocharged four-cylinder.

A nine-speed automatic gearbox is standard equipment for both power units. Though this SUV is great for families, the gear selector with a push-button is inconvenient. The front seats are also a little uncomfortable.

The outboard second-row seats may glide and tilt forward even with a kid seat installed. By 2022, all four types of on and reverse cross-traffic warning systems will be required by law.

How to Reset GMC Acadia AC; what causes the AC to be reset?

Several reasons affect the AC’s performance effectively. So the following are the most common reasons for the issue…So this is How to Reset GMC Acadia AC.

A pollen cabin air filter.

The pollen filter, also called the cabin filter or microfilter is an essential part of your GMC Acadia’s ventilation system. The general ventilation of the interior deteriorates due to a filthy filter, resulting in diminished cooling, heating, and air movement.

It also puts undue pressure on the overall AC system, which reduces the fuel efficiency of your Acadia.

Pollen Cabin Air Filter
Pollen Cabin Air Filter

Although there is no common schedule for replacing the cabin air filter, most manufacturers suggest every 10,000 to 20,000 miles. If you drive your vehicle in a dusty or polluted location, the filter will likely get filthy far sooner than the manufacturer recommends.


Begin by checking the condition of your Acadia’s cabin air filter. Instead of replacing it right away, it’s common practice to clean the pollen filter first.

This may be accomplished with a vacuum cleaner or compressed air system, which will remove at least a significant portion of the visible dirt particles. Unfortunately, this method does not enable you to access the filter’s more profound levels.

As a result, the filter’s performance will not improve considerably even after cleaning. Change is unavoidable in most cases.

Pollen or Clogged condenser.

The air conditioning condenser, like the radiator, is located at the front of the GMC Acadia and is responsible for releasing and reducing the heat from the refrigerant into the ambient air.

Grime, bugs, and other microscopic particles may accumulate on its surface and in the spaces between its mesh over time. Because less air travels through the mesh, the condenser’s capacity to release heat is hampered, resulting in poor interior cooling.


If your Acadia’s condenser is filthy, the easiest option is to clean it. You’ll usually have to take off the front bumper to get to the condenser. You may clean the condenser using a power washer, but make sure it’s on moderate pressure since excessive pressure can easily harm the fragile fins.

If your Acadia’s air conditioning isn’t operating correctly, it might be due to a clogged or leaky condenser. A leaky condenser may result in refrigerant loss and a reduction in system cooling performance.

A leak search is done in the workplace using forming gas to discover breaches in the air conditioning system — even the tiniest leaks may be found. It may be established if the loss of refrigerant is due to a faulty condenser in this manner. If this is the case, the only alternative is to replace the damaged component.

An issue with a refrigerant leak.

Usually this is the cause to ask question about “How to Reset GMC Acadia AC”. The primary reason for a non-functioning AC system is still a lack of refrigerant. Due to the design, a loss of up to 15% of the refrigerant every year is usual. If you don’t get your Acadia’s system serviced regularly, the refrigerant level will ultimately drop to the point where it loses its cooling ability.

Get it refilled, and you’ll be able to drive at comfortable temps once again. If the refrigerant level drops rapidly, there is most likely a leak.

AC leak in GMC
AC leak in GMC

Component defects are usually to blame for the escape of the refrigerant gas on the GMC Acadia, in addition to average loss. The most typical culprits include a faulty sealing ring, a worn line, or a condenser that a stone chip has damaged.


It’s not always simple to locate these leaks, which are usually extremely small. In the workshop, the system is filled with forming gas (nitrogen with a trace of hydrogen).

 More significant leaks may already be audible, or you may use a leak detecting spray to locate them. Smaller holes must be located using a gas detector to explore all components. Once the leak has been discovered, it must be repaired by replacing the faulty component.

Pollen evaporator.

When it comes to GMC Acadia air conditioning, the compressor is at the core of everything. Moving components transform gaseous coolant into a liquid, which is how your car is kept at a comfortable temperature.

In most cases, repairing a compressor is impossible. The pieces are also moveable if the air conditioning is turned on often. When the Acadia’s air conditioner isn’t turned on for an extended period, the components get stuck.

Pollen Evaporator fix
Pollen Evaporator fix


The outcome is a malfunctioning compressor that cannot be rectified. It’s not possible to get it fixed without replacing the old one.

The AC compressor failure resulting in metal chips being dispersed throughout the Acadia’s AC system is the most damaging since it “eats” itself due to inadequate lubrication or a manufacturing fault.

If you merely replace the compressor, you’ll have another failure since the chips will immediately eat away at the new one. The complete air conditioning system must be replaced in this situation. In this location, the maximum number of pipes may be washed.

To ensure that detergent has as little resistance as possible, both the condenser and the evaporator were built with cross-flow in mind. Although these chips are pulled back by the high-pressure refrigerant during operation, more damage is unavoidable.

Fallen blower motor.

The blend door actuator has an impact on how much air flows through your Acadia and how hot it becomes. The mix door actuator may be faulty if the air conditioning system fails to maintain the desired temperature.

Blend door actuator problems in GMC Acadia are often accompanied by a faint clicking sound emanating from beneath the dashboard. As soon as you switch on the air conditioning, you’ll hear a distinct rumbling sound. Temporarily halting the sound may be accomplished by lowering the thermostat.

If your Acadia makes a banging noise, it might be an indication of a malfunctioning blend door actuator, although this is quite unusual. When you switch on the air conditioning or turn off the engine, you hear a sound that sounds like a gentle tap on the door.

FAQs about How to Reset GMC Acadia AC.

Why does my AC light blink three times GMC Acadia?

When the outside temperature is too high or too low for the air conditioner to work properly, the indicator light flashes three times before going out. To be expected.” In addition, there’s a defog tool: “Unless the temperature outside is below 40 degrees Fahrenheit, recirculation is turned off, and the air conditioning is activated.

How do you turn on the AC in a 2012 GMC Acadia?

Where is the AC pressure switch located on a 2011 GMC Acadia?

On each side of the AC unit, you’ll find switches that control the flow of electricity through the system. One switch is located on the upper level, while the other is located on the lower level.

We hope you’ve got the answer that you’ve needed for the question, “How to Reset GMC Acadia AC” reading our explanation. If you have more questions just leave a comment below, and we are really straightforward to help you further. If you need any answers for engine matters, check this link for it. Thank you.

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