Ok, just to make sure gm had not scrubbed the sight i did not not have a problem. It's quite easy. Just scroll down and chevy bowtie image with rivets shows up. Hit it. Then here's your sign. PDF' s all the way back to 1930's up to 2000's. https://www.gmheritagecenter.com/gm-heritage-archive/vehicle-information-kits.html
Oh well. ..
Oh well. ..