There are four Generations so the Jeep Grand Cherokee. We have the first generations that were produced in the years (1992 – 1999) with the most notable Jeep Jeep Cherokee in this era is the Jeep Grand Cherokee ZJ. The second generation was produced in the years (1999 – 2004) with more rounder edges in terms of design, the most notable Jeep Grand Cherokee of the second generation include the Jeep Grand Cherokee WJ. The third generation of the Jeep Grand Cherokees was produced in the years (2005-2010) with the Jeep Grand Cherokee WK being the most notable Jeep Grand Cherokee of the era. The fourth Generation of the Jeep Grand Cherokee, including the WK2 and was manufactured from 2011 to the present.