The model name is BOSCH GSB 18 V-EC
I have this drill for a few months in which I used it every day and I decided to clean it (gearbox and motor) because it showed signs of fatigue.
I hope this video helps other people who have the same drill model to rebuild the gearbox,chuck,dc motor.
I also have another video with this model: Bosch PSB 18 LI-2 if it is helpful.
https://www.youtube.com/watch?v=_Q-LXsq_7bM&t=396s
Thank you for watching my videos