Gas Gauge on 2000 Jeep Cherokee

I noticed the other day that my gas gauge wasn't moving..it was at half a tank...so i filled it up to see if that would make a difference...it did...now the tank wont read past a full tank ( i drive about 30 miles to and from work so I know it should be moving) it is not going down.... what could be the issue and how much could it be to replace it..

by in Ada, MI on April 04, 2009
1 answer
ANSWER by , April 05, 2009
You need to have an inspection of your fuel gauge and sendng unit to determine which component needs to be addressed. I usually use a scan tool to check the what the fuel sending unit is telling the computer in the tank and compare that to the gauge reading.