[johnnie44]

is there a purge line on a 96 deville and if so where is it placed please help if you can

 

[Submariner409]

Assuming that you have a Northstar engine, here's where it starts at the engine - and runs over across to the nipple on the side of the coolant reservoir.

This is for a 2000+, but the purge line nipple is in the same location for yours..................