I have a 2018 GMC Terrain SLE 1.5L I4 Gas DOHC Turbocharged 2WD FWD. The other day the brakes got very stiff and required full force to stop the car while I was in the expressway. When I cut the car off it would not crank up again, it appears the battery is dead. I have a cheap diagnostic tool and it’s Reading the following codes:

P0017 crankshaft position, camshaft position correlation bank 1 P0017 generic sensor B P0556 brake booster pressure sensor circuit range P0700 transmission control system mil request P305E GM

I looked online and from what I saw it’s either the crankshaft sensor, the brake booster, brake vacuum so I purchased all 3. A friend of mine thought it was the exhaust ocv causing the issues so I let him replace that and it didn’t help anything.

As far as it not being able to crank, I had aaa jump it and I let it run for 20 minutes but the second I turn it off and back on again it won’t crank again. These issues all started at the exact same time, but are they related? Should I bother paying someone to replace those 3 parts and waste money or just bring it to the dealership? Any advice would be appreciated.