Chevrolet Cobalt Questions

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All lights and radio come on battery is good can you please help
Almost every time I come up to a stop sign or just simply idling my car will shut off even worse if the ac is on. I have replaced the throttle body and wiring to it and several sensors. It been in the local shop 4 different times and still not fixed I'm left clueless on what the problem could be and help would be appreciated
This is regard to defect with a cracked fuel tank inlet control valve. My Cobalt appears to have this issue. The notice I received states that GM will address but limits addressing this to within 10 years or 240,000 km whatever comes first. My Cobalt mileage exceeds 240,000 km. I believe GM should address this regardless of mileage. Is this another fault of GM for which people must die in a fire before they take care of their problem. Is their a class action suit forming?
give a slight touch of gas comes back could it be timming chain at only 52,000 miles
If im going down interstate at 65 or 70 and let off the gas pedal it will slow to like 55 in no time
I have free on in my car but no cold air my heater works but no hot air . what could be the problem please help me
I have a engine installed same tranny that worked fine it will not shift out of first gear and only rev up to 4000 rpm and will go down on rpm there was nothing wrong with tranny befor the change codes po976,po700,po717,po973,po976,p2764,checked plugs on tranny don't know whats going on didn't do anything to tranny just changed motor out thanks spexs
Sounds like it is running a lot higher than normal at 2300 rpms. Any ideas?
Part number is 20871082. I've heard that it is but had a supplier tell me it wasn't and try and sell me another part at double the price.
So my dad bought this Chevy colbat 3 years ago from a dealer used I would say it had about 17k miles on it, problem started last year. We do its tune ups on time but out of the blue the car just started to act weird the car would bog and or turn off at stops, the engine will start to jerk when it would change gears and when we would drive the car the all the dashboard lights would go off and the gauge needles will start jumping around that's when the problems begin

Any help would be appritiated thank you!
I have had the head replaced all new valves new coil new spark plugs new cam sensor new crank sensor any idea what the heck is wrong with this car help in 3000 im widow and im broke
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