“I know the silverado has a lifter issue with the AFM (Active Fuel Management) system so I’m getting concerned”
I wouldn’t obsess over that if I were you....it’s not that ‘till it is.
Having it diagnosed by a trusted shop would be my 1st move......in the mean time, if your that concerned it might meltdown, by all means find an alternative mode of transportation.
Yes. I had it diagnosed by my local chevy dealership. They only recommended replacing a bank of lifters, not the entire side or both sides.
Cost for that at the dealership (both sides) without replacing the camshaft was 5500.00 another grand for cam.