liamrh

so to begin,

A/c working fine last spring. Nothing but warm air now.

04 2.0 lsj RL

Checked the pressure through low pressure port. Checks good.

No a/c related codes. 10 amp mini blade fuse in bay junction block is good.

Warm air.

Turn on a/c, fans don't come on in engine bay.

Ideas?

09turbo

what year is your car?
a friend of mine had a wire come loose and it did about the same thing. but it wasnt a cobalt.
check for a loose wire.

or as said below, a fuse.
lol. that was the 2nd thing i thought of.

3de3gre33dk3

fuse maybe? or compressor

JohnnySasakiMGS

Dumb suggestion. Fuse?

liamrh

Edited

kylewalton2007

see if the compressor is engaging or check for 12 volts at the compressor

insylem

He said he checked that already

aikin198

Mine does sort of the same thing, i can hear mine kick on, just doesnt blow out hard at all so i just open the windows til i can get it figured out

dgscobalt

I have a 05ss/sc, had same issue. pull out your stock hvac controller. see if on the biggest of the three clips in the back has a spot where it got hot. if so your hvac controller needs replaced. 260 bucks new, acdelco is like 140 bucks. i went to a LKQ pullapart salvage and found a hvac controller, plugged it in and it worked. Also first try the fan motor resistor module, it sets underneith your glove box against the fire wall. if you have trouble finding it, trace the black wire coming out of the front of your fan motor.

BLKLS

How did you check the refridgerant level? You said you checked it at the low side, did you use a gauge set or just see if some came out? Start the car turn the ac on, if the fans don't turn on then something is not right. Make sure the compressor turns on if not its more then likely the charge. If the charge is good the it electrical, check power and ground at the compressor.

tr_8301

i had the same problem.... the dealer told me it was a high pressure switch. whenever i turned mine on the clutch wouldn't engage.... they replaced that and its worked fine since.