One problem related to starter solenoid has been reported for the 2000 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Jeep Grand Cherokee based on all problems reported for the 2000 Grand Cherokee.
Both tail light assemblies stopped working and was cited by a police officer. Replacement was ~$500. Rear lift gate lock actuator is broken, so cannot open lift gate. Right rear door lock will not allow opening from inside. Shift sensor/solenoid has gone bad twice leading to problems with shifting from gears (revs really high before shifting). Rotors are constantly becoming warped and brakes have to be readjusted. Left blinker no longer works and to fix it, the dealership told me they have to replace this entire engine block for about $800. Power window lock no longer works. Other than that, car runs great :).