The main GM article on Wikipedia used to make that distinction, but it was heavily edited to de-emphasize the fact that the original GM was liquidated. The original company was General Motors Corporation. That went bankrupt, and the name was changed to Motors Liquidation Company. If you were a GM stockholder before the bankruptcy, you ended up with stock in Motors Liquidation. If you were a creditor of GM, you were a creditor of Motors Liquidation.
A new company, General Motors Company, was created, and it bought the more useful assets of Motors Liquidation. Not all of them. Motors Liquidation was left to sell off unwanted plants, and such assets as GM's car collection. (GM used to have a collection of one of everything they'd made.) Today's GM is General Motors Company, much smaller than "Old GM".
https://en.m.wikipedia.org/wiki/General_Motors_Chapter_11_re...