I just wanted to say that I am having the same problems others are having. Transmission out, electronic fuel sending system (Controlls fuel guage) replaced 2 times, waterpump, heater core, wheel berings, window motors. GM sold these with the new Dex Cool engine coolant. Around 1999 they discovered this was breaking down and causing internal engine rust. I'd trade in before 70k.
I love the fuel cap!! You simply rotate it to the left and viola, it's open. Putting it back on is just as easy except you rotate it to the right.