[My query is about PNR 4341529892 for train 16854 CHENNAI EXPRESS]
Enquire in station because I am not able find this coach
But it is after D2 that is 21 may be
Recently 50% of the sleeper class coaches of this train 16854/Cholan Express has been classified as second class chair car(reserved coaches). So most probably the second class chair car coaches will be after sleeper class coaches and it would be better if you make this clear(D3 position) by reaching station beforehand to avoid any haste.