When it is dark enough outside and the exterior lamp control is in the automatic position, the headlamps come on automatically. See Exterior Lamp Controls.

The vehicle has a light sensor on top of the instrument panel. Make sure it is not covered, or the headlamps will be on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
Lights On with Wipers
If the windshield wipers are activated in daylight with the engine on, and the
exterior lamp control is in AUTO, the headlamps, parking lamps, and other exterior
lamps come on. The transition time for the lamps coming on varies based on wiper
speed. When the wipers are not operating, these lamps turn off. Move the exterior
lamp control to
or
to disable this feature.
Daytime Running Lamps (DRL)
Hazard Warning FlashersRear Window Wiper Motor Grommet Replacement
Rear Window Wiper Motor Grommet Replacement
Callout
Component Name
Preliminary Procedure
Remove the rear window wiper motor. Refer to Rear Window Wiper Motor
Replacement.
1
Rear Window Wiper Mot ...
All Seasons Tires Description
Most GM vehicles are equipped with steel belted all-season radial tires as standard
equipment. These tires qualify as snow tires, with a higher than average rating
for snow traction than the non-all season radial tires previously used. Other performance
areas, such as wet traction, rolling ...
Air Conditioning Compressor Bracket Installation
Install the air conditioning compressor bracket (2).
Caution: Refer to Fastener Caution.
Install the 3 air conditioning compressor bracket bolts (1) and tighten
to 22 Y (16 lb ft).
...