I went through all the info I could find, but there were still some combo's that didn't show up. Can anyone help with these codes?

LNF
MU3
QO1
UPF
ISS
ISZ

There were also some that came up saying something like "Option 16", where do we find what they are ?

 

Try this link:

https://www.chevyhhr.net/forums/show...t=12674&page=2

 

LNF is the engine....2.0turbo that one I know

 

You can also PM the last 8 of your VIN and I will reply with your build sheet.