GM Service Manual Online
For 1990-2009 cars only

LF Window Operation

When the ignition switch is in the RUN position and the LF window switch is pressed in the down position, voltage is applied to the window regulator motor causing the LF window to open. When the LF window switch is pressed in the up position, voltage is applied to the window regulator motor in the opposite direction. The LF window closes.

The LF window switch also controls the right window. Refer to RF window switch operation for details on how the right window operates.

Express Down Feature

The window will travel to the fully down position if the down position in the LF window switch is momentarily pressed down past the first detent. Pressing the LF window switch to the up position in order to stop the window.

RF Window Operation

When the ignition switch is in the RUN position and the RF window switch is pressed in the down position, voltage is applied to the window regulator motor causing the RF window to open. When the RF window switch is pressed in the up position, voltage is applied to the window regulator motor in the opposite direction. The RF window closes.