Amycellis

Today I checked the OBDII status for my 2021 GMC sierra. I did NOT have a check engine light come on, however my truck has been semi-stalling and shaking, along with several other symptoms. When I press the ignition button without my foot on brake, my check engine light does not come on either. When I scanned my truck the status showed 0 codes yet had 3 shorter codes, 7E8, 7EA, and 7ED listed under control module. Also, the scan status showed n/a for all three continuous monitors: Comprehensive Component Monitor (CCM) Misfire Monitor Fuel System Monitor I purchased my truck brand new March 2021. Should I be concerned? Or does my truck not monitor these specific ones? Can someone please advise?