Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello I'm Neal and I am here to help resolve your issue. If I cannot help I will opt out and refer your question to another expert.
You can try a come-along on it if it is still well supported in the car, sometimes it works and will get it close to original. Usually it will not go quite back all the way without creasing as the metal usually stretches.