AC question

[jhicks]

98 c1500 3rd door 2wd.

im honestly not sure if this is where this thread belongs but heres my problem.

I know my ac works. I played with the controls until it worked. then I made the mistake of turning it to heat and that's where it stayed.

so, it seems to be stuck on heat. everything on the hvac control head seems to work. I haven't been inside the dash. actually im dreading having to drop the dash.

another piece of info, at one point it seemed that I could hear sloshing of water inside the vent system when my ac was working. not sure if a blend door got soaked and malfunctioned. I did some tinkering a while back but couldn't find the source of the water. I made sure it wasn't the heater core.

any help from someone who has experienced this would be wonderful. any help in general would be nice.

 

[poncho62]

Sounds like the blend door is not functioning....There is an actuator under the dash to control it, thats about all I know about it

 

[sewlow]

Could be the controls. I replaced mine when it wouldn't operate the doors properly. The AC ones are electronic. Trucks without AC use cables to control the heat & stuff.

 

[jhicks]

sewlow I do believe you know everything about these trucks lmao.

anyway, under the dash has always intimidated me. I have fat hands which make tight spots difficult. i don't want to just replace the control head to try to fix it. but im not entirely sure how to diagnose it.