location is in the same res as the front also common is the nozzle to clog their is also a ck valve under the plastic rear window arch directly behind the nozzle and may have a filter located under the right/pass side tailgate floor panel if the pump does not work repair that first than ck other items. note: ck valve has a small rubber like disc inside that some w/w fluid may melt causeing it to stop working their are also some of these located on the front for the front washers on the hood in your case.