2011 BUICK REGAL, L & R front window stopped working at same time. they don`t work at master switch & the p/s switch
the back windows work just fine. my radio stay on long after the car is turned off & the door is open ( to long after door is closed ) all fuses are good. ANY HELP WILL BE GREATLY APPRECIATED,

THANK YOU!! IN ADVANC

 

You might need a capable scan tool to check module health, (BCM, Body Control Module).