Chevrolet Sail transmission control unit defective

Hey there! Your issue sounds eerily familiar. I had similar transmission problems with my old Opel Astra, though it was the petrol version. Was it showing similar symptoms like gearbox slipping and being stuck in emergency mode? Did you have grinding noises as well?

Indeed, the symptoms you describe align closely with what I'm experiencing, especially the emergency mode and slipping. Can you share a bit more about your particular situation and how you resolved it? Was the root cause indeed the same transmission control unit, and did it give similar error messages?

Precisely. Turns out the mechatronics unit in my Opel was shot. The mechanic confirmed my suspicions after looking at the error codes. I wasn't able to fix the issue myself, so you should probably get yours checked as soon as possible at a workshop to avoid further damage.

Thanks! I appreciate you sharing your experience with your Opel Astra. I will take your advice and consult a reputable workshop. I also suspect it will turn out to be a defective transmission control unit. The technician at the shop confirmed my suspicions and informed me it is indeed the unit. Repair costs should be around 1000€. Thanks again for your help!