One problem related to rear window wiper washer motor has been reported for the 1999 Jeep Grand Cherokee. The most recently reported issues are listed below.
The vehicle experienced the following problems: no horn, interior lights, or door locks, the abs/brakes lights were on, continuous overheating when idled, despite repeated brake work, they were still a problem, the dashlights didn't get bright as normal, hissing noise in the brakes (booster was replaced), blower motor was inoperative along with mode position (replaced blower motor resister wiring harness), front pinion seal leaked and was replaced, there was a broken bolt in the rear stabilizer bar (removed), when the vehicle was placed in drive from park, it shifted hard (replaced driveshaft), the control module was replaced, the brakes pulsated on numerous occasions (TSB was completed), the blower module was replaced, all gauges stopped working,all warning light would come on, the engine temperature climbed higher than normal (replaced the fan power transmitter), the windshield wipers had become inoperative, and the arm had broken (replaced the rear arm). The consumer requested the dealer to back the vehicle. Mr scc.