ok well i had no control of the air way in my 1998 suburban 1500. By that i mean i couldn't change the air flow from face vents to defrost or floor vents and the air wasn't that cold in the front but in the back the rear ac works great. so i first thought ok just put for refridgerant in it,so i did and no results except the rear ac got colder.When ifinally i figured that i couldn't control the air flow i replaced the air duct actuator. still no results

any ideas? anyone? please... it would be much appriciated.


i live in florida so having no AC isn't a solution that i can deal with

 

I have a 98 Suburban and the way I understand it, when the refrigerant is low, the front ac will stop functioning first while the rear ac blows cold. If you have too much oil in the system, the ac will not blow as cold as it should. If you do not have the equipment, I would suggest taking it in and having the system evacuated and recharged.

As for the airflow, I have not had that issue with my 98, but in my 85, I had the same issue. There a vacuum leak caused the problem. That actuator was vacuum driven.

 

Have you checked out the HVAC control module? Do the actuator arms move when the Face/Feet/Defrost control **** is turned?

 

yeah had that problem with my ac system 98 suburban i had to much oil in it took it to the shop they checked the control switches fixed that and i had a leak in the low side high side assembly had to replace the that whole line that run from the evaporator to the front of the ac radiator it connects to your compressor i put a new compressor on it to bring it to a trusted shop with a good reputation have them suck all that gunk and oil replace your filters and your should also check for leaks they can do that with the recharge machine