The driver side power switch sometimes called the master power window switch controls all 4 power windows as well as the window locks, right and left side power windows. When your factory switch fails you may lose control over one of these systems. This replacement switch installs in a matter of minutes in your Chevy Silverado, Traverse, HHR or GMC Sierra and will give you full control again. The switch features an OEM finish to match your Chevy or GMC's interior and plugs directly into your vehicle's wiring harness.