WE HAVE EXPERIENCED NUMEROUS MAJOR PROBLEMS WITH OUR PASSPORT SINCE ITS PURCHASE IN 4/99. IN 2/00, WHILE DRIVING A 65MPH, THE REAR DIFFERENTIAL SPONTANEOUSLY WENT DUE TO A LEAK IN THE REAR AXLE OF THE CAR. OUR VEHICLE REMAINED AT THE DEALER FOR OVER 50 DAYS DUE TO PROBLEMS OBTAINING THE CORRECT PARTS FROM ISUZU. WE HAVE ALSO HAD ONGOING PROBLEMS WITH THE ABS SYTEM ESPECIALLY AFTER GOING OVER BUMPS,UNEVEN AND SLICK SURFACES. IN EACH INSTANCE, ALTHOUGH THE BRAKES WERE FIRMLY ENGAGED,THE VEHICLE EMITTED A LOUD GRINDING SOUND FROM UNDERNEATH THE FRONT OF THE CAR, THE VEHICLE PULLED TO ONE SIDE, AND THE ABS SYSTEM DID NOT IMMEDIATLEY ENGAGE.ON 11-21-00, THE ABS SYSTEM FAILED TO PROPERLY ENGAGE ON OUR VEHICLE, WHICH RESULTED IN A REAR END ACCIDENT. THE VEHICLES' ABS SYSTEM FAILED TO ENGAGE AT A SPEED UNDER 15 MPH. THE CAR PULLED TO ONE SIDE AND WOULD NOT STOP! THE VEHICLE SUSTAINED OVER $5000 WORTH OF DAMAGE ALTHOUGH NO AIR BAGS DEPLOYED AND THE ONLY DAMAGE TO THE OTHER VEHICLE WAS A SLIGHT DENT TO THE BACK BUMPER. DURING A MAJOR SNOWSTORM IN 2-01, WE FOUND OUT THAT THE 4-WHEEL DRIVE NO LONGER WORKED ON THE VEHICLE. ALTHOUGH THE MANUAL SAYS THAT THE 4-WHEEL DRIVE COULD BE ENGAGED ON THE FLY, THE CAR WOULD NOT TRAVEL OVER 10MPH WITHOUT VIBRATING THE ENTIRE VEHICLE. IN ADDITION,THE RIDE FELT LIKE BEING IN A BULLDOZER AND WE WERE BOUNCED AROUND THE ROAD. FURTHER, THE 4-WHEEL DRIVE WOULD NOT DISENGAGE UNLESS THE VEHICLE WAS PUT INTO REVERSE. THIS REPAIR TOOK OVER 50 DAYS TO ACCOM