... Another thing I remember seeing on a bulletin a while back was a second pressure regulating valve in the sump that can stick open if it's got debris in it causing a low oil pressure warning/dtc but that's unlikely. Do you have any type of scan tool that would let you monitor oil pressure?
Yes, there was an issue with L77 in VE according to the link I posted above where some valve would stick within the oil pump and cause low oil pressure issues; supposedly fixed in VF.
Hopefully the OP read the article I linked to. If so he may consider that the secondary mesh filter in any AFM engined vehicle can cause lifter noise on startup if is dirty and such doesn’t always flag a DTC unless the dirt causes a big drop in pressure. So worth OP monitoring oil pressure and checking DTC as suggested.
Problem with AFM vehicle’s, if it is a problem at all, is that the lifters need very clean oil and supposedly dirt as small as 3 microns is enough to cause issues. So any servicing that opens up the oil galleries (for example changing secondary mesh filter) needs to be done with complete cleanliness at heart and only one should only use high quality spin on oil filters.
I am not going to rip it apart for a little tick that i can live with , was just wondering what it could be at such early kilometers . Might try some lifter free and see how it goes . Thanks for all you input much appreciated.
+1 for what Pablito said with the added emphasis on getting someone skilled to have a listen and give the all clear
After all, a forum simply can’t replace a skilled ear and what you describe verbally and how we interpret it on a forum could be poles apart. Luckily the VE/VF issues I linked too above has a video of problem lifter noise in LS2/LS7.
Maybe you’ve listened to that video though you make no reference whether your noise sounds like that or not. And as smashfists stated, if you have chirps, clacks or clunks you have a problem that you should address and ignoring such could in the worst case result in something breaking which can then cost a awful lot to repair.
Hope all goes well.