I have had my Astro for 8 years now. It has been a really great car. I bought it reconditioned after a wreck, and it still has been great. This year it burned a valve in the head of the engine and is running rougher; however, my father likes it so much he said he'll keep it and put in a newer engine.
I have driven my Astro since I bought it new in 1990. Drove it on a trip the next day for 1500 miles and have loved this van ever since. I now have 193,000 miles on it and have only done routine mechanical for it. AWD has saved my bacon a few times. It now gets about 22 to 24 miles to the gallon on the hwy so I just can't let go of it.
very dependable, roomy, ice cold air conditioner, rear seats remove easily but are a little heavy, gets 20-22 mpg on highway, controls on dash are laid out very well, good engine power, smooth ride, driver's seat adjusts well for shorter drivers, cruise control works well, only had two problems: occasionally blows radio fuse and side door occasionally locks on its own causing the door to bounce open when you try to shut it (this van does not have power locks - a body shop man showed me how to trip the lock mechanism, unlock it, and thus make it shut).
Our Astro proved highly function for our family. Camping, Towing, travel across the country, cargo mover. The 4.3L engine was just right. The size is excellent, most mini vans are really to small. My duaghter is about to inherit the Astro van as her first car. I do wish general motors would take the details a more seriously. This was the 1st year they built the passenger EXT version and the rear heater had to be disconnected about the 5th yr of ownership.