constant knock

Have a 2008 tahoe that is showing constant knock as soon as you start driving. Have replaced knock sensors and lowered timing in spark tables and still have knock it shows its operating out of the low octane table entirely with the knock learn at 1 cant seem to figure it out fueling seems to be alright as well any help is appreciated log and tune attached below thanks i also logged each individual cylinder as well showing knock in all
Attachment 84543Attachment 84544

Does it do it with say 93 octane fuel?

If it was the same way, then to me that seems to be false knock and you could make the knock sensor less sensitive.

Haven't tried a higher octane fuel yet will have him fill up with some and give that a shot

your missing a ton of info to diagnose.
you must have 02 b1s1 ob2s1 o2b2s1 o2b1s2 need mv on each incase its too lean ltft and stft also to check for clogged cat
need maf reading map sensor in kpa knock retard on every cylinder incase its just one or two cylinders
you need ltft bank 1 and 2 spark advance.
knock on each cylinder yes evey cylinder if you have a bad bearing one cylinder will knock if you have a back main front 2 might knock.
engine coolant temp
cylinder airmass calculation
fuel pressure in case your running low pressure and its not spraying properly
plus oem tune with current tune and mods.
im pretty sure that is all of the info I need.
intake air temp
also commanded fuel pressure if applied