The parts are similar but unfortunately they are not interchangeable. I attached the picture of each to show the differences. If you look close the fuel lines are different as is the connector so you won't just be able to switch them out for each other.
Here are the OEM part numbers that show they are different as well. If they are interchangeable the OEM would use the same part number.
Cavalier - 88957239
Cobalt - 15245457
Let me know if you have questions. Thanks
Images (Click to enlarge)
Friday, September 27th, 2019 AT 5:04 PM