Climate control does nothing

[Xmayakartoum]

Hi, I have a strange problem with my climate control. Here is the first thing what happend is that all was working fine exept that when you put the speed of the blower motor on 1 nothing happend, the second and full power worked but the blower motor made a ratling sound. So i changed the blower motor and then it became smooth and blowing fine. Except on low speed no air but on second and full blowing good. O yeah rear AC always worked fine.
Changing vents position is not working only window defrost, wich i presume that these are the vacuum lines that are briddle of broke.

Next day i started the van and now nothing works. No fan blowing at any position, the rear window defrost button not working, and the rear AC doing nothing.
Could it be that it is a fuse or a relay? or is it the climate control module that is malfunction? I have no clue so does anyone had this problem or maybe have some tips for me to try of look at. Thanks

[sixsix]

Climate control does nothing...

At least not the "Human Kind of Control".

[AstroWill]

Changing vents position is not working only window defrost, wich i presume that these are the vacuum lines that are briddle of broke.

Exactly, see the sticky in this section.

Next day i started the van and now nothing works. No fan blowing at any position, the rear window defrost button not working, and the rear AC doing nothing.
Could it be that it is a fuse or a relay? or is it the climate control module that is malfunction? I have no clue so does anyone had this problem or maybe have some tips for me to try of look at. Thanks

Yep, probably blew fuse 12 under the dash.

[Xmayakartoum]

Hi, Yes the fuse under the dash was blown. Changed it and "worked" like before. So now ac rear works, defrost works and blower fan works, but only on middle and full power. Low and second one does not work. Could it be that the blower motor resistor is the cause of this?
Next step will be changing the vacuum lines to change the vents. They are not norking only on defrost.

[Walleyehunter]

Very well could be. Pull the washer fluid reservoir. Test light the harness while switching speeds. Just replaced my resistor board because I had no high blower. That is the orange wire. When you remove the board you’ll see it’s pretty well toast. Ordered a Delco replacement off Amazon. You have to nip the 4 plastic pins off the back of it to fit it back in the hole. You’ll see.

[AstroWill]

Hi, Yes the fuse under the dash was blown. Changed it and "worked" like before. So now ac rear works, defrost works and blower fan works, but only on middle and full power. Low and second one does not work. Could it be that the blower motor resistor is the cause of this?

Most likely, pretty easy to check at the connector.

Next step will be changing the vacuum lines to change the vents. They are not norking only on defrost.

Common issue, see the sticky in this section.