Hello people! I am new to the LS game but am very excited to learn. I am in the very early stages of a 51 Chevy truck build up with of course an LS/4L60E
motivation. I just purchased a 5.3 with 36k miles on it from an '05 Envoy Denali. I do not have the s/n of the vehicle yet but I have several numbers off of the block that I was hoping may help identify it as far as the still mystical codes I am starting to read about.(LS1, LQ4 and so on) Both numbers are on the driver side/rear of the block. Stamped on the block is T52322311. Cast in to the block is 12569513. Any help or direction to look at would be great.