GTA Online Title Update 1.05 is live on both PlayStation 3 and Xbox 360. The update addresses "residual issues where occasionally people's vehicles or vehicle modifications were disappearing due to a cloud save failure."
Built in measures to prevent users from losing their progress when there is a cloud outage
Built in a number of measures to protect players’ cash balances even if there are network problems
Fixed an issue where on rare occasions during network problems the player could lose their Online vehicle or mods after exiting GTA Online
The GTA$ Stimulus is expected to be distributed in the next couple of days following this update. The Stimulus will go out over the course of a full day once it's initiated.