The sending unit is nothing more than a rheostat (resister). It sends power to the body control module which then sends power to the gauge. You could have a bad sender, a wireing issue, an issue with the body control module or the gauge itself. Since you already replaced the sending unit, start checking wiring to make sure nothing appears damaged, corroded.
SPONSORED LINKS
Monday, January 17th, 2011 AT 2:23 AM