$1800 sounds low compared to my transmission replacement. I am being told $3800 to replace mine and I have heard horror stories on other forums of up to $5000. What is the true cost of fixing the wave plate problem, there is such a big variation between dealers and GM. I have 107,000 miles on my 07 outlook with a 100,000 mile warranty. It went wrong while on vacation and away from home so it is not being fixed by someone I know and trust. The GM dealer said that all they could and would do was replace the transmission as they had not had a good success rate in repairing them. I could get lucky and get 20k out of a repair. He could not tell me if the replacement transmission would have the old or new wave plate in it but that I would have a new 100k warranty with it.