This is a window regulator with the motor for the front, left window on many different GM vehicles from 1999-2014. This is a used regulator with the motor in working condition with normal wear and tear. This squeaks. You could probably get the squeaking noise to stop by lubricating the tracks and cables. This is for 2002-2008 Cadillac Escalade, 2002-2013 Chevy Avalanche, 1999-2014 Chevy Silverado, 2000-2014 Chevy Suburban, 2000-2014 Chevy Tahoe, 1999-2014 GMC Sierra, and 2000-2014 GMC Yukon trucks. This is a factory OEM, genuine GM regulator, not a cheap aftermarket part.

A failed window regulator can cause your power window to get stuck, make a grinding noise, or make your window appear to be off track. Replace your regulator and make your window work like new again.

GM part # 20945138

Alternate part # 20914717

Item is number 5 in the GM diagram.