heat wont work

[markiemark998]

Hello
My heat in my colbalt wont work. The heater core gets really hot so its not that. Does anyone have any ideas? please help

 

[Tuner923]

you need to be a bit more specific. is the fan not working? and how did u check the heater core? does the blend and mode functions work?

 

[markiemark998]

yea its blowing fine . I put my hands on the hoses going into the firewall and its def hot. The ac works and the car running at normal temps. Yes the modes all work fine.

 

[Tuner923]

the blend door is probably stuck on a/c

 

[markiemark998]

how could i fix that? just whack the dash? thank you for takeing time to help me

 

[Tuner923]

I really don't know. I tried to look up a schematic/diagram for the hvac system but had no luck. so I am not completely sure how the system works. It could be just a failure of the control unit (knobs) or the door is physically stuck. I wont be back in school for another week to access the AllData software.