I'm sorry, but those numbers don't represent actual codes. As explained on the instructions I uploaded for you, history codes are represented by the letter E followed by the pertinent digits (ex: E12, E62, etc.). Current codes are represented by the letters E.E followed by the pertinent digits (ex: E.E12, E.E.62, etc.).
Let's say, for example, the engine won't start because there is no distributor signal to the onboard computer. Codes E12 and E.E12 will be displayed.
Another example; let's say the coolant sensor circuit is shorted. Codes E14 and E.E14 will be displayed.
I understand this diagnostic procedure can be difficult to follow for someone who is not used to doing this; unfortunately it is the only procedure available from GM.
All I can advice is to have patience and try to follow those instructions without any kind of deviation.
I have to log off now. I'm online weekdays from 2 to 8PM EST. Will check on your progress then.