I have a 2002 Sequoia - 114k miles - one owner. Dealer serviced. About three months ago I took it in for service before leaving on a weekend roadtrip - about 500 miles round trip. We stopped for gas about two hours in and when I pulled back out onto the highway, the VSC warning light began to flicker. I was going 60 - 65 mph on clean, flat, dry pavement. The RPMs revved but the car slowed to about 50MPH. The transmission was not making any noises. If I remained in the mid 50's or less, no problem. If I accelerated, the VSC would flicker and the car would slow. I drove on to our overnight in Vermont, nursing it along. The next day, we got in the car and headed off home with no issues. Stopped for gas about 2 hours in and then the same problem repeated as we got back onto the highway. I took it to the dealer. They kept it for three days but could not recreate the problem. The computer did not register that the VSC Warning was ever activated but they did find that the steering was slightly out of alignment which they said could cause the VSC Warning to activate. The car drove fine in May and June but I can't recall any long drives. Two weeks ago, mife wife drove to Laguardia to drop off my son for a flight. about two hours round trip in traffic. 90 minutes in on the way back on Hwy 95, the VSC Warning light flickers again - same issue. It stops before she gets home and seems to be driving fine. Last weekend I drive an hour North to Brownstone and on the way back it acts up again. It has now been at the dealer for 5 days and they can't recreate the issue or find a problem. Computer doesn't register the issue. CV boots are all fine. This I know they checked (was part of the service back in April before issue started). I don't know what else they have checked. We're stumped. Has anyone else experienced this issue or have any ideas? The truck is clean and has never been in an accident.