The only tool you really need is a pair of vice grips a couple sockets #10 mainly duct tape and some band aids..
You can safely take apart any GM and reassemble
Oh yeah and a case of beer and doritos
Sounds like an old timer who I first setup mobile homes with. Except he substituted yours with vise gribs, two screwdrivers, and electrical tape by the case for yours. As well as Scotch instead of beer. The man nipped all day and gave me the habit as well.