Quote Originally Posted by Thymeclock View Post
This condition is normal in cold weather. Technically, there is no overdrive on an Aveo automatic. It's an Aisin (Japanese made) 4 speed with torque converter lockup. (The TC lockup feels and acts like overdrive when it kicks in at around 45 MPH.) Until the engine warms up sufficiently it will not go into lockup. All my other Japanese cars have acted the same way.

The good news is that nothing is wrong. The bad news is that this is a very cold winter.
That is good news! Thanks