GM Service Manual Online
For 1990-2009 cars only

Object Number: 810835  Size: A2

Twilight Sentinel® turns your headlamps on and off by sensing how dark it is outside.

To operate this feature, slide the control to any position to vary the lamp time-out.

You can set the delay time from only a few seconds to three minutes. If you move the control all the way to MAX, your lamps will remain on for three minutes after you turn off your engine. If you move the control almost all the way in the other direction, so it is just on, the lamps will go off quickly when you turn off your engine. Sliding the control to OFF, turns off the Twilight Sentinel® feature.

Light Sensor

Your Twilight Sentinel® and DRL work with the light sensor on top of the instrument panel. Do not cover it up. If you do, it will sense "dark" and the headlamps will come on.