The second generation Voyager was built on the Chrysler S platform. This was a platform that had been derived from the K platform made infamous in the 1980's. The Grand Voyager was not introduced until the 1987 model year. It had a longer wheelbase than the Voyager, but it was still based on the same S platform.
The Grand Voyager trims included the SE, LE, and the "Grand LE." The engines started at 4 cylinders but a V6 was made available. Front wheel drive was also the base configuration, but four wheel drive was also sold as an option.
The third generation of the Voyager, and second generation of the Grand Voyager, began in 1991 and lasted until 1995.
By the end of its run, the Grand Voyager was also sold in Sport Wagon and Rallye trims. The four wheel drive was available on all trims except for base.
The final generation of the Grand Voyager lasted from 1996 to 2000. It was not based on the Chrysler NS platform. Another new feature was the fourth door, allowing entry on both sides. This was only an option, and the base model still came with just the one sliding door.
By the end of its run the luxury features that had once been just options were offered as standard equipment. All Grand Voyagers got power locks and windows and air conditioning. The luxury options left were such things as rear seat entertainment systems, something that did not exist when the Grand Voyager started out.
One final trim on the Grand Voyager was added for the 1998 and 1999 model years. It was the Grand Voyager SE Expresso. The Expresso name was added as a trim option on most Plymouth vehicles towards the end of the companies life.
The Grand Voyager is a fairly common vehicle on the used minivan market. If you are going to buy one, the one suggestion I make is that you check out the prices on Grand Voyagers on eBay.
You don't want to pay thousand more for a used Grand Voyager in your town when you can save lots of money buying one a few towns over. There are also lots of good parts on eBay floating around for really low prices.