A/C not blowing cold air?

2004 CADILLAC ESCALADE
200,164 MILES
Avatar
MERKUM901
  • MEMBER
  • 12 POSTS
If my HVAC system is topped off what else could cause my A/C not to blow cold air in the front and back. Don't know if or how to top off rear refrigerant if it's an option.
May 20, 2023 at 8:24 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

This can be the result of a few different things. Most commonly, it is the result of low refrigerant (Freon).

Take a look at this link. It explains step-by-step how to charge the system. Additionally, the second link covers the causes of an AC system not working.

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

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

Let me know if that helps. If it doesn't, I need to know if you hear the AC compressor engage when you first turn the system on. You will likely hear a click from under the hood. Also, check to see if you can change the incoming temp from heat to no heat. That will tell me if there is an issue with the blend air door,

Take care,

Joe

May 20, 2023 at 10:13 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.