VXOC Astra-J/GTC

Hi guys after noticing my drivers side DRl not working I replaced  the bulbs. However the drivers side drl is still not working even though the sidelight is. Any ideas

I had that once found locking the car and leaving it for a few hours sorted it.

Is the bulb definitely dual filament?

Hi yes defiantly dual filament it's only the drivers side that the drl doesn't work however when you switch the sidelights work on both??

Try switching bulbs from one side to the other, if the bulb from passenger side does not work in the drivers side then it could be wiring, if it does work then it is the other bulb.