What is the Freon capacity for this vehicle?

1999 CHEVROLET SUBURBAN
206,000 MILES • 5.7L • 4WD
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LEAD FOOT
  • MEMBER
  • 1 POST
freon capacity with dual air. Several sites say 3.5 lbs and then some say 4 lbs. I really would like to know what is the proper capacity according to GM specs. The sticker is missing.
Jul 1, 2021 at 1:43 AM
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BORIS K
  • ✓Experienced Mechanic
  • 836 POSTS
Hello,

According to Mitchell 56 ounces (3.5lb) of 134a with rear air con.

Please let us know how you get along.

Cheers, Boris
Jul 1, 2021 at 2:01 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good evening,

The capacity is 3.5 pounds as the previous tech stated.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Make sure you recover the system and evacuate the system for at least 45 minutes, then add 1 ounce of oil and charge the system to 3.5 pounds.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

If the system is low, you should check for a leak in the system as well. I attached a guide for you for the procedure.

https://www.2carpros.com/articles/air-conditioner-leak-detection

Roy

Jul 1, 2021 at 9:55 AM
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