I have one, with the 3.1L engine. 230K miles, engine and transmission have around 150K. It developed a problem, according to a mechanic, with a fuel injector, that caused it to run on 5 cylinders instead of 6, and with a heavy fuel smell in the air. It seemed to me that it was flooded, and that was confirmed when it was in the shop.
The real question, is he told me that it would cost around $1600 for a new injector rack [the 'rail?'] to have it installed. This seems crazy to me, as I've seen single injectors for sale, and it would seem to me they are fairly easy to replace.
I'd love any input anyone has. Thanks.