One problem related to brake master cylinder 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.
Regarding the brakes: after repeated (3 times) complaints about the brake pedal going all the way to the floor (when driven under stop and go commuter-type traffic) and each time there was "no trouble found" I finally (on 7/29/2000) drove into the dealership with the pedal all the way down to the floor. A mechanic was called and said there was definitely a problem and they summized "it must be the master cylinder". With respect to the engine: after repeated complaints (at least 3 times) of oil leaking from under the engine and having it dismissed as 1) sloppy oil change, excess oil from left on engine block, 2) faulty oil filter, 3) rear main engine seal (rear main was replaced) and continuing to have oil leaks, on 7/29/2000, I brought it in and the dealership says the engine is "porous" and the entire engine needs replacement. I was advised to not take the vehicle due to the brake issue. The vehicle is at the dealership awaiting arrival of a new engine and replacement and also installation of the master cylinder. With respect to the differential whine, I have been told twice "it is normal" and nothing will be done. .