rear right turn signal / brake light always on, even when car is off
 

I have a 2008 uplander, I have full permanent Voltage coming out of the bcm on the pin leading to right rear turn signal / brake light and same trailer wire.
It's the dark green wire. It shows full voltage even when the car is turned off.

Is the bcm shorted / needs replacement?

find the brake pedal position switch on the brake pedal...unplug the connector...if the brake lights go off...try a new switch.

Light still stays on..

maybe the bcm is bad or maybe the wire is shorted to voltage.
the bcm will have full diagnostics for that circuit...have the bcm checked for fault codes. a full function scan tool that can access body codes is required...code reader won't do it.

Hello tech2:
Would you send me a PM, I'd like to talk to you if I could.
Thanks.
Bob