I just wanted to drop a post on a common topic - those so reliable window regulators from GM.
Anyway, I have had two rear regulators that had broken for quite some time. I have been holding my two rear windows up with locking pliers for the past 2yrs.
I decided to take a chance on the company out of New York called Mirror Guard Co.
Their website is: http://www.onetobuy.bizland.com/index.htm
I placed an order with them to repair my regulators, pre-paid via PayPal, boxed the two regulators up and shipped them via UPS. They charge $75 per regulator to fix them and ship them back to you for free (included in the price).
They turned my order around in one day! I received the repaired regulators, installed them and they work great! They appear to be bolting a bracket onto the white plastic guide that normally fails in these regulators. If any of you have taken your regulator out and took a close look at it, the failure point is the white plastic slider that is suppose to retain the two cables that pull the window up or down. Over time, this white plastic slider'* retaining clip breaks under the load of the two cables that pull. Their repair is to bolt a metal bracket onto the plastic slider. So, to me, they are probably stronger than the original GM part (in my opinion).
Oh, and this was for a 2002 Bonneville SE with 160k miles.
Anyway, just wanted to let other owner'* know they have very good service and their product seems to work great.
Oh and by the way. I did try to perform the fix that is posted in the forum (building your own metal clip). My cables were just too twisted and gnarled up. But, the fix does appear to work if your cables haven't been chewed up as much as mine.