3 of the power windows in a 2000 pontiac bonneville stopped working, how do i fix this?

It is possible the driver's door control module has gone bad, especially if you recently had a broken window regulator in any of the other doors (the cable mechanism that makes your windows go up & down) . My passenger front window regulator mechanism failed and took out my driver's door control module in my 2000 Bonneville. Lost ability to control front passenger and rear door windows, all locking, and the interior lights wouldn't come on when door opened, and radio would not shut off. The driver's door module acts as the master controller of the other three door modules which as indicated by the other comments all "talk" to each other. Spent $150 for someone to diagnose that they could not communicate with that module, but they wanted $1150 to replace it as the local dealer wanted about $800 for the part. Online GM sellers wanted over $400 for it. Found a used one on ebay for $25 from a wrecking yard and it solved the problem. Easy to replace myself, just two nuts and four plugs to pull out and put in on the replacement.

**** it hard