Sluggish and No Brake Lights
My daughter is reporting her 2006 cobalt was acting sluggish and under powered after the car sat for a week. It appears intermittent and has happened twice in the last week.
I have pulled the codes and found C0045 left rear speed sensor, U2100 controller area net bus communication, U2106 abs lost communicate with TCM, U0073 ECM communication bus off, and the service engine light and traction control lamp have been on when it acted up. Both lamps are off now and the car drives fine.
In addition and perhaps related the lower brake lights do not work but the middle upper does. All fuses and bulbs are fine.
Anybody have any thoughts or suggestions on where to start?