The Stovebolt Site Forums The Shop Area General Truck Talk what was the first yr for automatic in a chevy truck

First year for automatic Hydra-Matic in a Chevrolet Advance Design truck, Was 1954.
I heard some 1953 Chevy trucks were built with the automatic Hydra-Matic, though I have never seen any.
First year for GMC truck was 1953.
There was some GMC box trucks that may have had them earlier.