2017 gmc 1500 sierra slt 5.3 v8 It has happen several times where engine won’t spin over.I have checked the battery and cable connections all ok.I have 3 codes to pop up p2535 and p0700 p129d I have replaced ignition switch and it seemed to fix it until the next day.I can spin starter from the starter relay so I think starter is good.please if anyone has run across this please what you found.

How old is the battery?

How many miles on the car?

How many miles have you owned it?

If the engine is turning over good by doing that then the battery is not the problem. We need to look at the control side. The new switch is OEM?

Two of the three codes refer to low voltage. I'd hate to troubleshoot some different direction then find a five year old battery in it.