I've got the 2-volume GM shop manual set for my '97 Lumina. Always have them for my cars, which are usually at least 6 years old. Cost 10-50 bucks on ebay, depending. I wrote off replacing the flattened lower engine mount on the car because the shop manual procedure requires an engine holding fixture, dropping the engine cradle, right front suspension, and pulling the half-shaft. In the procedure there's talk of bolts going through the block and the sealer to use to keep crankcase oil from leaking out after the mount replacement. Totally ridiculous to replace an engine mount. Figured I wouldn't do it because rust says the car will be gone in a few years anyway. Then I ran across a W-Body thread in a forum where the guy posted pictures of how he does it without any of that procedure. Just some jack stands, a floor jack to lift the engine, detach one dogbone and get it done from the wheel well. One to two hour job, no realignment and all the other crap in the shop manual. Probably get the mount today and do it this weekend. Go figure. Here's the link - which might save somebody a couple hours searching.
--Vic