the heating/ac blows air but the control to switch between the two is broke, sometimes i get a/c others i get heat.

the a/c button, rear defrost, and circulation buttons work but are very unreliable, like the a/c heater

boost gauge isnt working, and neither is the cruise control.


any help would be greatly appreciated. i dont want a new ecu... but i might have to, i heard they aren't reliable with mods

05 cobalt ss/sc

 

you can check fuses but sounds like the bcm

 

fuses were all good.

 

any work on your car done recently that involved drilling through the firewall? Geniuses drilled through my main wiring harness once and caused me problems...

If you haven't had audio work done, etc. have you had your car jumped recently? Sometimes BCMs get butthurt after the car's been jumped. Pull off your negative battery cable and let it sit for about 10 minutes so the BCM turns off. Reattach it and see if anything changes. If not, go get your BCM checked out at the stealership.

 

k, ill try that, maybe itll reset and life will be good. otherwise ill have to pull out my dash and get dirty with some wiring


:edit:

k so i blew my 16 fuse again which covers the whole hvac/tcu/etc.., tomorrow is supposed to be nice so ill do some wire tracing. hopefully its just some broken ones that are rubbing with each other and i just need to wrap them up

 

I thought you said all your fuses were good?

 

i replaced them all prior to posting this iniatally. but it turns out that the one keeps blowing over and over now. the car sat for 2 years before i bought it and started doing work so when there were blown fuses i really didnt think much of it at first.

and since it was snowing all day today, and i have no garage (just the dorm parking lots) i wasnt really able to get much done.

 

yea sounds like you have a short somewhere. you have a multimeter?

 

281-330-8004

 

If thats your cell I'm going to text you gay **** JJ.

 

thats the number rapper mike jones said on his older music was his cell number. idk if it was or not but his new music features a new number although i doubt he is doing anything but talking out of his ass

 

lol didn't even think about that... 2 8 1.... 3 3 oh eight zero zero fo.

 

lol i should have put it like that to begin with huh? it would have been clearer

 

hahaha yeah i got a multimeter but its been snowing for the last 3 days :S

and i get mike jones's number thrown at me all the time