AKA:Correct. A GMT-400 is a GM fullsize pickup from 1988-1998. GMT-800 is from 1999-2007 1/2 (you can have both new and old body style trucks in 2007. They made the switch half way through the year.) GMT-900 is 2007-Present.Good luck with your search
Help A dodge guy out here what does gmt400,800,900 mean? I'm assuming something to do with the years or different generations![]()
88-98 = GMT-400 = OBS
99-07 1/2 = GMT-800 = NBS
07+ = GMT-900 = NNBS
Just in case. BUT some guys prefer not calling them by the OBS/NBS/NNBS since it just gets confusing and it doesn't work all that well.
In addition, the GMT-400 3/4 and 1 ton trucks continued until 00. I've seen GMT-400 '00 3/4 ton trucks for sale before.

Correct about the GMT-400 carry over till 00 in the 3/4 and 1 tons.

