Whereabouts are the drain and fill plugs for the gearbox ?--(Aveo 4 I think E-Tech 16V engine one).
There's a diagram on this link for the transaxle refill but it's only 2.1 litres so I'm thinking that this is for the diff only and that the gearbox plugs are elsewhere .
---or is the diff in the gearbox ?--
http://gm.ws123.net/EN/documents/Kalos/start_kalos.html