2000 Buick Lesabre Power Window Occasionally Fails

Hello--

I have a 2000 Buick LeSabre and both the driver's side power windows--front and back went out at exactly the same time. The back window had actually made a grinding sound, had fallen off the track and had to be fixed right away.

My mechanic suggested replacing the regulator, which I did and while a little noisier than before, the back window works fine now. He was under the assumption that replacing that regulator/motor (both parts sold together) would fix the problem with both windows. It didn't. I just get a "clicking" sound when I try to lower the driver's window. Nothing else happens. Then occasionally, the window will work fine for a few days, only to stop working once again for another week or so at a time.

Mechanic suggests inspecting and replacing that regulator/motor as well. He says it's just coincidence they burned out together. Just seems odd to me that BOTH regulators went out on the same day, same minute. Could it be anything else my mechanic isn't considering? I'd hate to have to pay for yet another regulator/motor if there may be another option he could first check out.

Thanks for your response!

Mike
Denver, CO