I have a 98 trans am that his been sitting since 2003 with no battery, I just put a new battery in the car and the odometer does not display any numbers but the backlight works. It sat inside the garage and under a car cover most of the time. The stock stereo is also not powering on at all but everything else seems to work...any ideas??? Thanks in advance!!!

 

Mines acting up too , it doesn't tell how fast your going but everything else works , someone said its my Pcm .

 

Check all the fuses no radio op is a dead giveaway or a sign of direction to start troubleshooting. PCM has no control over the ODO it all internal to the cluster.

 

i have the exact same problem. did u find a solution? please let me know asap.