Multiple codes?

The car is off the road every year for 5 to 6 months (on trickle charger) and there are always codes when I restart. I disconnect the negative battery cable and all is well. This year that did not happen.

The car drives fine except when I get the “service stabilitrak” light come on, the car goes into limp mode for 10 seconds then drives fine. I have been getting the “service stabilitrak” warning since I bought the car and has been to the dealer multiple times with no answer.

I get the “service stabilitrak” warning light when I drive the car hard, accelerate hard. The spark plugs, coils & fuel injectors have all been changed with no luck.

i did buy a new battery but the codes persist.


1 power steering control module code
u0121 lost communication with anti-lock brake system (abs) control module


1 anti-lock brake system code

u0401 invalid data received from ECM/PCM ‘a'

2 suspension control codes

u0100 lost communication with ECM/PCM 'a'
u0121 lost communication with anti-lock brake system (abs) control module

1 engine control module code

p0300 random/multiple cylinder misfire detected

4 body control module codes

b3205 lf/driver window motor circuit malfunction
b3210 rf/passenger window motor circuit malfunction
b3215 lr window motor circuit malfunction