age of Trane HVAC unit

Am doing a 4 pt today and having trouble aging a trane XE1000.
the serial # is G15280245. Everything I have researched says the “G”
denotes 1992.
Is this correct???
Thanks for your help

Are you certain that S# is exactly correct? Got a pic of the data plate?

not positive but am going to meet the agent over there tomorrow for another reason and I’ll look again-----plus the pictures I took of the date plate weren’t