Automatic Transmission problems of the 2010 Buick Lucerne

Purchased 2010 Buick Lucerne in Dec. 2009. Have the gear shift on steering column. When gear shift is in drive the total on star navigation system and 1/3 of radio cannot be seen. This is an accident waiting to happen. You have to take your eyes off the road and turn your body towards center of car to see the directions for navigation and also to see dials on radio. Wrote a letter to ceo of gm in Jan. 2010. At first, they said it was my stature that I could not see navigation nor radio. (am 4' 9") and that if I wanted to rectify this situation, I would have to pay $800 for a different radio. Since then, I went to the dealer and had the car test driven by the service manager. I have a work order confirming this. Results - noone can see the navigation system in the drive position. Called gm - was angry as they lied to me. They now admit that this is a problem but would not do anything until more complaints are registered (I feel accidents to happen). They are keeping an open file. This is wrong. I cannot use the system as I'll have an accident. Even the radio, I am reluctant to change stations until I am stopped because I cannot tell where stations are. Gm advertises the wonderful on star navigation system but I can't use it or I'll get into an accident. Have been contacting gm for 3 months and nothing is happening. Can you help?.