GM Service Manual Online
For 1990-2009 cars only

This feature activates the headlamps and parking lamps after the windshield wipers have been in use for approximately six seconds and the multifunction lever is in the AUTO position. See Exterior Lamps .

When the exterior lamp control has been turned off or is in the parking lamp position and the wiper control is on delay, low speed or high speed, the HEADLAMPS SUGGESTED message will appear on the Driver Information Center (DIC).

When the ignition is turned off, the wiper-activated headlamps will immediately turn off.