Express-down Windows
Vehicles with the express-down feature allow the driver and front passenger windows to be lowered without holding the switch. Push the switch down to the second detent, then release, to activate the express-down mode. The express-down mode can be canceled at any time by pulling up on the front of the switch. To open the window partway, push the switch down to the first detent until the window is at the desired position.
See also:
How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free Calling ar ...
Engine Oil
For diesel engine vehicles, see “Engine Oil” in the Duramax Diesel Supplement.
To ensure proper engine performance and long life, careful attention must be paid to engine oil.
Following these si ...
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 ...