In Hellblazer #66 (Fear and Loathing, part 3), after his heart is taken and Gabriel is cast out of Heaven, he wanders the streets of London, homeless. He doesn't appear again until, in Hellblazer #79 (Rake at the Gates of Hell, part 2), Constantine retrieves the heart and uses it to locate him. Gabriel says,
All I do is wander. [..] Where once I strode the halls of paradise, now I trudge around this dungeon of a city like some shade in limbo.
In the following issue, Gabriel's heart is crushed by Satan condemning Gabriel to "damnation and agony eternal", which seems to be his last appearance; this story-line is the only one mentioned in Gabriel's entry in the 2008 Vertigo Encyclopedia.