Question about 2004 Cadillac CTS
The sender unit,which measures your fuel, is a resister attached to a float.(basically) the more fuel the less resistance,and the gauge reads a full tank .I believe this little unit has worn out.Unless you have an access hatch in the floor under the rear seat to access the unit the gas tank has to come out to replace.Contact your dealer for this information.This unit is incorporated into your fuel pump so this gets replaced as well. It can get pricey to deal with,so you might just want to keep the tank full all the time,given this is a ten year old car you have to be the best judge as to how much you want to spend on it .good luck
Posted on May 14, 2014
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Posted on Jan 02, 2017
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