Crashone's right on. I just did this job. The sender unit is behind the rear seat, drivers side. I loosened mine with a hammer/punch then took it out with channel lock pliers. Careful removing the nut that holds the housing to the sender unit. It is synthetic and breaks easily. The float guide rod on mine had a rough spot on it, which caused erratic reads. I smoothed it with steel wool and now the fuel gauge is rock solid.