Fuel guage issue

[gach2]

Hows it going
just got a vy commodore
and the fuel guage is playing up
the guage itself works randomly (mostly on empty but sumtimes does go up but not accurate)
the kms/100kmh still seem to work
the kms to empty still does still have figure (no idea how accurate it is though)
the check menu on the dash say that fuel guage is not working, contact retailer or something

not too familiar with commodores
so if anyone can give me any info id appreciate it
thanks

[Sabbath']

Probably needs a new MRA.(Fuel Pump Assembly) Tank out job.