It is bolted in the valve body that is inside of the transmission.
With a 07 chevy cobalt key
The shift solenoid on a 2007 Chevy Cobalt is located inside the transmission. Specifically, it is typically found on the valve body or the transmission control module. Accessing it usually requires removing the transmission pan and may involve displacing some components, so it's advisable to consult a repair manual or a professional mechanic for detailed guidance.
in the trunk
It does not have one.
No it will not
87 octane
to the low side
.040
13.3
100lbs
see your Chevy parts man.