How do you replace the rear window with a slider of a 1990 Chevy c1500 Also where can i get a replacement window?

The easiest way to get a windshield replacement for your Chevy c1500 is to shop around online. That way you can see prices and services offered. You can search for 'windshield prices' on google. I went through the process on Glass.net and the price was about $230 for a rear window