Either bad gauge (unlikely) or bad sending unit (probably). Either way you're going to have to pull the gas tank to diagnose the problem. Either that or top it off every 200 miles and forget about it.
The 2003 Pontiac Bonneville has a gas tank capacity of 18.3 gallons. The low fuel warning light will come on when the gas tank level gets down to 2.3 gallons.
Check the Power Steering Fluid level.
Yes, to a certain degree. Actually the SSEi trim level comes stock with a supercharger.
I had this problem with my 1994 Bonneville SE. would try checking the transmission fluid level(that was the problem with mine). If the transmission fluid level is where it's supposed to be then it could be that the transmission is going out or you may need to check the torque converter. I think that can also cause the problem.
2000 PONTIAC BONNEVILLE 3.8L 6-cyl Engine Code 12000 PONTIAC BONNEVILLE 3.8L 6-cyl Engine Code KCAPACITIESEngine, with filter..........4.6 quarts [1]Wix Oil Filter...........51040Cooling System, Initial Fill..........10.0 quartsAutomatic Transmission, 4T65E Initial Fill..........7.4 quarts [2]Automatic Transmission, Total Fill4 speed 4T65E..........13.0 quarts1. After refill check oil level.2. With the ENG at operating TEMP, shift TRANS through all gears. Let ENG slow idle in PARK for at least 3 minutes. Check fluid level and add fluid as needed. Do not overfill.10W-30 is the preferred Oil for both.
Stick the tank like in a gas station. lc
In 2002 Pontiac sold the Aztex, what might be considered a crossover, the Firebird, classic sportscar, and the Bonneville, which was a higher end four door sedan. Also available were the Grand Am and the much sportier Grand Prix, available with a supercharged V-6 engine. The Sunfire was a base-level coupe with a 2.2 liter engine, and the Montana was Pontiac's take on the mini-van.
This is two of the things I know that could be wrong. The power steering pump is either bad or there is no power steering fluid in the pump causing it to have steering problems. Be sure to check the fluid level in the power steering pump.
The fuel level gauge is in the tank
it is the fuel level sensor located inside the tank.
on the fuel pump is a little floater, inside the pump is an electronic sensor which reads your fuel level, meaning that if your fuel pump goes out due to bad wiring, or just gets worn out, your fuel gauge will go with it, but no worries, once you put a new one in, and put on the new wiring harness your problems should be solved. hope this helped :)
You would need to use alternative method of checking the fuel level, such as dipping the tank.