Stalling Out at Idle & Check Engine Light

[JayTrailBoss]

19 Silverado TrailBoss V6:

Several times now the truck stalled out when in park and idling. I try to restart and it turns over but won't start, take the key out and try again a couple minutes later and it works but the check engine light is on. 

Prior to this starting, last week while driving 60mph on highway the truck shuddered/shook a few times and the check engine light came on. 

OBD reads out P16AF & P16A7 as the error codes. 

Dealership said they ordered a new part...anyone having issues like this?

Also, still no fix on the backup camera glitching out. Someone is gonna get hurt and GM has been made aware and I filed it with NHTSA. No fix yet...