Automatic Headlamp System
When it is dark enough outside, the headlamps come on automatically.

Do not cover the light sensor on top of the instrument panel or the headlamps will come on when they are not needed.
The system may also turn on the headlamps when driving through a parking garage or tunnel.
See also:
Airbag System
The vehicle has the following airbags:
• A frontal airbag for the driver.
• A frontal airbag for the right front passenger.
The vehicle may have the following airbags:
• A seat-mounted side ...
Vehicle Overview
The GMC Sierra 1500 and Chevrolet Silverado share the same platform, but the
GMC product is often positioned as a more upscale offering. Mechanically, the
trucks are the same. There might be sligh ...
Checking Coolant
The coolant surge tank is located in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview on page 10‑6 for more information on location.
The vehicle must ...





