AFM and lifter tick

[Michael DeClercq]

time to beat a dead horse, I reset my pcm/ecm when I cleaned throttle the other day, and all motor vibrations at idle and 900 rpms went away.... then came back. BUT I installed a DIC and when I watch it go from v4 to v8 the vibration from 900 to 1000 ish rpms is ALWAYS when it switches from v4 to v8. its not a shutter or vehicle shaker but noticeable and annoying as hell. also my slight vibration at idle is back and I but not as bad so I think that actually was the throttle needing some cleaning. lifter tick ONLY occurs in v4 cruising on the road so if someone could explain any of that or give some tips thatd be helpful. think I might just need new lifters and put a programmer on to shut off the AFM/DOD. I change my oil every 1500 to 2500 miles full synthetic done by gm dealer. guy before me who owned the truck clearly didn't do the same.... thanks for any help

 

5.3L 2009 AFM ext cab 4wd 1500