Three problems related to engine and engine cooling have been reported for the 2000 Jeep Laredo. The most recently reported issues are listed below.
I too brought a Jeep cherokee from a used dealership in 2008, it is a 2000 4l 6i also, same issues, the week after I brought the car the engine blew, the dealer would not cover it because they sent it to their mechanic shop and of course the mechanic shop said it wasn't the dealers fault, they told me that a rock hit the fan and put a small hole in the engine. . . I spent close to 1200 getting the engine rebuilt. Car ran for a little while then the check coolant light kept coming on, I had to keep a bottle of coolant in my car and the coolant would run out every 2-3 weeks. Then in oct the engine blew again, my car is currently parked until I can find a low mileage engine to replace the old one. I do believe that this is a flaw in the design. Meanwhile I am still paying a car payment and having to work to get money to fix my car. . . Ughhhh.
I called the dealer about this notice and they told me that they would not be able to help me for another 6 weeks. I thought that this was too long to get my vehicle checked out, especially with this being a manufacturers defect.
I have a 2000 Jeep grand cherokee. I have an anti-freeze leak. I have had it fixed twice. I wish I could tell you what was done but I know very little about cars. I am currently having the problem again. I went on the internet to find out what it could be but all I found was a large number of people who have sunk tons of money into fixing the problem on their 2000 Jeep grand cherokees. I am currently adding anti-freeze daily.