Someone other than myself suggested to get a magnet (capable of lifting 50 lbs.) and run it over the gauge in the direction you wnat it to move.
How do you replace the fuel filter on a 2003 Buick Regal?
The 2012 Buick Regal runs on flex-fuel (FFV).
The 2002 Buick Regal runs on regular unleaded.
The 2003 Buick Regal runs on regular unleaded.
The 2011 Buick Regal runs on regular unleaded.
The 2004 Buick Regal runs on regular unleaded.
The 2001 Buick Regal runs on regular unleaded.
The 2013 Buick Regal runs on regular unleaded.
The 2014 Buick Regal runs on premium unleaded (recommended).
Wandering fuel gauge on a 2003 regal
Stuck/faulty fuel pump relay or possibly a faulty ECM.
In the fuel tank.