Today I check the OBDII status for my 2021 GMC sierra came up as 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?

 

i have a 21 aswell ill see whatt the old hunny says in the am