transmission problem

I see an intermittent message "Service Transmission" on my 2017 Lacrosse with 27k miles on it. There is no "check engine light," and this message usually appears when I park the vehicle or put it in neutral. I scanned with the OBD2 tool, and the code is P07BB, "Transmission Park Position...

1995 Park Avenue with 285K. Runs great but just recently it seems as if the trans. is slipping in 1st gear - the rpms have to go up considerable to get up to any speed. However, if the gear shift is put into 1st gear, the car accelerates like it should with minimal rpms. Is this a trans...

Hey guys, My buick started whining today really loudly. Its coming from the driver side around transmission bell housing. It sounds like a power steering pump when its low on fluid except mine is full and does not whine. Also transmission shifting with a kick from 3rd to 4th. When I start...