If your 2015 GMC Acadia is having trouble with the air conditioning, it may be time for a recharge. You can do this yourself at home with a few tools and supplies.
First, make sure that your AC system is turned off. Next, locate the low pressure service port on your Acadia. This will be on the larger of the two hoses connected to the AC compressor. Once you've found it, attach the can tap to the service port and screw it in tightly.
Now, open up the can of refrigerant and connect it to the other end of the can tap. Slowly release refrigerant into the system until you reach the recommended level for your Acadia (usually around 2-3 cans). Be sure not to overfill!
Finally, remove the can tap and screw on the cap for the service port. Start up your AC system and enjoy cool air once again!