My son just bought a 1991 4x4 4.3l Blazer and is having trouble with the power windows and courtesy light at the tailgate window. Anyone know a site other than Autozone where I can download engine and body scematics? I can't copy Autozone'* completely. Thanks.

If you are looking for full on nitty gritty diagrams you may need to turn to the Factory Service Manual. Last I knew, stuff like the Haynes/Chiltons manual (and I'm guessing the Autozone site too) is a typical idea of about how it should work.

What'* going on, and what are you looking to accomplish?

Alldatadiy.com will have what you need for schematics. About $15 a year for a subscription.