My air conditioner blows air about the same temperature as outside, I have charged it myself and it blew cold air for about a day but then went back to how it was before. Could this be as simple as a leak? if so how would I go about fixing this?

My engine will make this sound approx. after running for 5 or so minutes. The sound will come and go, but once it starts it won't stop until the next time I start my car and the noise doesn't start. Is it the belt, which one, or the fan?

Driving the freeway the speedometer fluctuates you'll be going 60 and it will go down to 0. or up to 80. the engine will race and sometimes it feels like it's gonna die on you. But it hasn't yet.Plus it jerks to. Trans people said that wasn't it. Nor does it need a tune up. WE have paid 400.00 for nothing .

Car smells of gas when come to a stop, there is no signs of gas dripping on ground when parked, took it to a repair shop they could not tell what it was. I'm afraid a little spark will start it on fire help.!!!

Indicator lights t/c and abs

Had the steering column recall thing done in December. I guess this doesnt fall under or connect to that. Took the cobalt in because steering would catch during turns and it was difficult to drive. Was told I needed the intermediate shaft replaced and then I was told to pick up the car. When I got there they showed me the piece and it was definately corroded but then they said the problem was still occuring and I now needed a new steering rack/gear. I don't doubt it needs parts but I want to know if they would have known this when they had it apart the first time and if they're just making me schedule and come back and pay labor again? They're certified mechanics I went to a dealership its not a small shop who has seen only a few of these problems.

In the last few days I've noticed my car AC blow out hot when I'm parked and setting. It kicks back up when im at 40mph or higher. I was driving around town and was stopping and going at the red light and traffic during that time I noticed The cooling mode came on and the car was trying to overheat and I noticed that once I started moving I started going and was staying at a good pace that my temperature comes down but if I'm sitting it goes up to 240 or more degrees also noticed that the fan by the radiator is not coming on. So iPhone and check engine lights coming onto the four throttle position sensor comes on and off and the eve app system comes on so I replace the sensor. Also checked some of the fuses and relays noticed that some of the fuses were missing so I replaced down also noticed that the relay for the air pump is missing. So I don't know during my or changes or I also recently took the car to a body shop has a lady that hit my car while it was parked and kind of start noticing more problems and issues after that so I don't know if I'm supposed at the car has an air pump should I have that sensor there? I was also told that the cooling system fan may need to be replaced. Any advice from anyone?

After a 2 hour drive my trans started hard shifting and the engine light came on with codes p1810 and p0700. I also noticed that after driving my door lock will not unlock when shifting into park and vise/versa. If I restart the engine then they will work. Before I go to the dealer I wanted to know if this is a shifter sensor or maybe the ignition switch. They already did the recall but maybe it went bad. Thanks for any advise.

out of nowhere the steering wheel locks and the fuel gauge and rpm goes to jumping back and forth also the gears click as i apply breaks also my mechanic gave a few codes but I dont understand this problem has been going since february Please help

Replace the engine the engine locked up and I need to replace it.

The auto locks on my 2005 cobalt work, but when I unlock the car, the alarm goes crazy. This happens whenever I use them, which is very rarely. The guy who sold it to me said not to use the auto locks. So if you guys know what to do, let me know.

The heater blew the BCM fuse. Replaced fuse and unplugged resistor. Heater works on high. Car travelled over 200 miles that day with the heater on high. Next morning the heater did not work. Could it be the heater fan? No noise came from the heater fan.

Been trying to do this for a week

I just got my ignition switch fixed and I was wondering if that had anything to do with the recall for the ignition switch?

When you start the car its not too bad.but when it warms up it hits hard

My car dashboard first begins flashing and the power steering warning comes up. The car then begins jerking and I lose the power steering. The odometer then begins moving up and dropping back down. The car also turns off a few times when I press brakes when this is happening. My car is automatic however when the gears sounds like it is having difficulty shifting and gives a very hard jerk when it does shift. This happens frequently and lasts for a very long time sometimes weeks on end. Many people have had this same complaint online but no one actually states if they ever got this issue resolved.

My a/c started to blow hot or room temp air. Took it to the shop they filled the gas and still . Next put on the computer showing ambience temperature sensor . It got change . Still the compressor doesn't start . They said that it run enough charge of electricity for the compressor to start but it doesn't . Finally told me I need to replace the compressor. Is that an accurate diagnostic and how much would be an estimate to fix it?

It will sounds like it doesn't want to start but will for now and this is every time i start the car for a couple of days

The alarm light will come on when starting the engine (not all the time). Car is garaged and not locked. I can still drive the vehicle but the transmission shifts hard and irregularly. Engine does not stall. Restarting the engine sometime fixes the issue but rarely. After driving a short distance, turning off the engine and let stand for 20-30 minutes, restarting resolves this issue. The ignition cylinder has been replaced by GM recall.

The other day I replaced a head lamp in my cobalt, I must have left the lights on and the battery died. Got battery charged and then engine light came on. The car won't shift out of first gear when driving. I hear a clicking sound that sounds like its coming from the shifter area when I apply the brake. It's an auto transmission. Can anyone help me please?

Just fixed my drum brakes and replaced my sparkplugs and coil pack along with ignition control module the other day. I don't know what the problem could be. It just started to jerk. Could it be moisture or my transmission or the transmission fluid?