poo16 code after replacing fuel pump won't start gmc 2011 terrain

Hello, that code is for "camshaft position A" - indicating the camshaft and crankshaft are not seen to be in sync. This wouldn't have anything to do with your fuel pump. And, there is no scan that will tell you to replace a fuel pump, either, so I'm not sure what that is for you. Hands on testing Is needed to find out what's going on, with a professional, skilled and trained technician. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops