1999 Chevrolet Venture wipers, windshield & visibility problems

While driving north bound on I-71 in northern kentucky, my driver side window blew out. I immediately pulled to the side of the road and dialed "911". Within minutes, the kentuck state highway patrol was on the scene. As we evaluated the situation and condition of the vehicle in question, I had concerns that the window was shot out. The officer assured me that it was not for the projectile would still be in the vehicle.

I noticed a smell of hot antifreeze. Also it would make a lot of noise when starting up. The thermostat never showed anything overheating. Oil didn't show anything on the dipstick. We change the oil every 3000 miles. The dealership that tore into it had said we did not change the oil ever by the looks of the internals. We bought this used 1999 chevy venture lt , august 2000 having 34,000 miles on it already. The previous owner bought this van in october 1998 brand new.