Replaced left axle shaft because outer CV boot tore. Replaced at a cost of $150. This is common on these vehicles, so it was no big deal.
Also, replaced front brake pads at the same time as axle shaft. This was at about 90,000 miles.
Other than these 2 things, I have done nothing else except change the oil. All power accessories still function properly, including the air conditioning.
Being the LE model, it is very comfortable. Soft, cushy seats make it absolutely wonderful to take on a road trip. Even though it is 13 years old, I am not afraid to take it on a long trip. There are no oil leaks and it handles well. No pulling to one side or shaking. It cruises down the highway very smoothly. My mother has a much newer car, but when we take a trip, everyone wants to take the Caravan.
Update on my Grand Caravan. Roughly a year later it now has 102,000 miles on it and is still running as strong as ever. The only repair last year was a faulty Oxygen sensor which caused poor fuel economy. Since having it replaced, it has gone back p to 17-18 city and 23-24 highway. I have a compact car (87 Chevy nova) that I drive back and forth to work so that keeps the miles on the van down. I drive the van at least once a week regularly and then drive it on road trips.