this means 02423/24, 03173/74, 03175/76, 05959/60, 02501/02 and all others can have loco change at GHY.
any electrification update beyond GHY?
Yes the mentioned trains can have LC in Guwahati but it will take time. Beyond Guwahati upto electrification has almost completed upto 45Km. Rest work in going on till Lumding.