How to re charge Chevrolet A/C Air Conditioner Yourself

How to recharge Chevrolet Air Conditioner AC Yourself

In this guide, you will find instructions on how to recharge air conditioner system on Chevrolet vehicles. If your A/C is blowing hot air, there is a chance that the system may be low on freon. Charging Chevrolet A/C system with refrigerant is easy and takes about 15 minutes.


Common symptoms that your Chevrolet is low on refrigerant include:

  • A/C blowing hot air even when the temperature is set to cold settings.
  • AC blows cold then hot,
  • AC blows cold sometimes,
  • AC blows colder when driving, ac blows cold air then stops

What you will need



Before you start recharging Chevrolet A/C system make sure that other components are in working condition. Chevrolet A/C may stop working if it is low on freon but also due to other problems such as A/C compressor not working, bad A/C clutch, bad temperature sensor, major freon leak etc. 

Park Vehicle

Park your Chevrolet in a safe area. Turn off the engine.


Open hood

To add freon to your Chevrolet you need to locate the A/C low pressure charging port in the engine bay. Pull the hood release under the dashboard until you hear your Chevrolet hood pop open.


Locate A/C port

Next, locate the low-pressure port, item 11. This picture shows where the A/C charging port is on various Chevrolet vehicles. Note that there also is a high-pressure line as well. The A/C charging kit connector will not fit on the port for the high-pressure line.

location of a/c low pressure port on Chevrolet  3rd


Connect recharge kit

Carefully remove the cap from the low-pressure port by twisting it counterclockwise. Connect your A/C hose to the A/C charging port. You are almost ready to add freon to your vehicle A/C system. Don't start adding refrigerant to your Chevrolet A/C system yet.

Start Engine

Start the engine and allow your Chevrolet to idle.

how to charge the ac on Chevrolet


 Turn A/C on

Next turn A/C on and set it to max cold setting. Set the blowing fan to maximum speed. Now you are ready to recharge Chevrolet A/C system.



Add refrigerant as directed by the A/C recharge kit you are using. Press and hold the trigger until your Chevrolet A/C is charged. This process can take several minutes. When the a/c system is low on freon, the compressor may not be engaged at first. As you add refrigerant you should see the compressor kick in.  As you charge the system stop charging the system every minute to obtain a pressure reading.   Continue adding refrigerant until your gauge reaches in the charged range. Do not allow the system to overcharge.

The instructions in this guide will help owner of Chevrolet Spark, Sonic, Bolt, Volt, Cruze, Malibu, Impala, Camaro, Corvette, City Express, Trax, Equinox, Traverse, Tahoe, Suburban, Colorado, Silverado, Sonic, Blazer, Astro, HHR, Uplander, Avalanche etc. charge the A/C that are filled freon (R134a). Note that the A/C charging port can vary between Chevrolet models but in all cases, it will be located in the engine bay.



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