Jack - Below is a screen grab from a sold on ebay
Chevrolet Capitol Series A A Instructions, Operation, Care Manual Jan 1927 that shows the transmission shift pattern.
I saw several original used and reproduction manuals that can be had for relatively little money that would go a long way in helping you gain answers to many of your questions. Just do a web search and they'll be easy to find.
I'm not sure how much difference there is between 1927 and 1928 Chevy's (fellow early Bolt owners will hopefully chime in), but you can find a
1928 Chevrolet Motor Cars Instructions manual here to help in looking for answers to your questions. It covers Cars and Trucks and the transmission shift pattern diagram in this 1928 manual is the same as the one from the ebay screenshot.
Definitely post some pictures as they will help us help you.
