fuel gauge not working on 2005 Buick Terraza

fuel gauge on empty-check engine lite on - low fuel message - fuel tank is full

Asked by for the 2005 Buick Terraza
could either be the sender unit in the tank or the dash unit. a scan tool will confirm the dash unit.
you will need a shop to do that test.

1 more answer
if we scanned the car i could tell u for sure but sounds like a fuel level sensor u can call us at 330-333-3997 thanks