One problem related to other fuel system fuel gauge has been reported for the 2005 Buick Lesabre. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Buick Lesabre based on all problems reported for the 2005 Lesabre.
Needles on fuel gauge goes all the way around and points verticle. Needle crashes into the thermometer needle that also points verticle. Does not correctly register fuel or temperature. I am depending on my odometer to guess at my fuel levels. This seems to have started after my "loose gas cap" alarm came on. I had cap replaced 2 times, light will not go off. This, of course makes the service vehicle soon light stay on.