We've updated our reliability stats for the Grand Cherokee to include owner experiences through March 31, 2013.
Repair frequencies, in terms of repair trips per 100 cars per year:
2004 Grand Cherokee: 78, moderate
2002 Grand Cherokee: 103, moderate, very small sample size
2001 Grand Cherokee: 231, high, very small sample size
2000 Grand Cherokee: 82, low, very small sample size
We'll have further updates in August and in November.
For the details, including the descriptions of reported repairs, and to sign up to help improve this information:
Jeep Grand Cherokee reliability ratings and comparisons