When the cable breaks then on GM products you have to come in from the side with a metal hook to catch the latch. This is not easy when you are doing it blind which is required. Basically you have to poke around until you are able to pop the hood.
https://www.2carpros.com/articles/how-to-open-a-car-hood
However, if the handle inside broke then you just need to grab the cable with a set of pliers and pull it and that will release the hood latch.
I attached a couple pictures below that will help with creating a metal rod to grab the latch.
Please let us know what questions you have on this. Thanks
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Thursday, September 2nd, 2021 AT 8:22 PM