I read the codes with my tech 2 on my 2004 XLR and there were several "No Communication" errors. I have no communication with the following devices:Amplifier( it looks like it may have gotten wet before),DSCC,EBCM,Electronic Suspension Control (It bounces), Instrument Panel Cluster ( It is blacked out), Steering column lock module, Supplemental Inflation Restraint. I am at a loss. Before the IPC went black I was reading ride control and the car was in limp mode 70mph. After it went out, I can drive at any speed. My seats don't slide back any more when I open the door,my top doesn't work and the trunk has to be raised manually...My car is broke. This all started after the battery died when I didn't drive it for months.I am in dire need of help or a good mechanic in Birmingham,AL.