Folding Mirrors
For vehicles with manual folding mirrors, push the mirror toward the vehicle. Pull the mirror out to return to its original position.
For vehicles with power folding mirrors:

1. Press (A) to fold the mirrors out to the driving position.
2. Press (B) to fold the mirrors in to the folded position.
See also:
Other Navigation Services Available from OnStar
OnStar eNav: Allows subscribers to send destinations from Google Maps™ and MapQuest.com to their Turn-by-Turn Navigation or screen-based navigation system.
When ready, the directions will be downlo ...
All Terrain chassis and suspension
Based on the chassis of the 2011 Sierra HD trucks, the All Terrain HD
features a fully boxed steel frame with exceptional strength and torsional
stiffness. It incorporates the production models' n ...
Emissions Inspection and Maintenance Programs
Some local governments may have programs to inspect the on-vehicle emission control equipment. For the inspection, the emission system test equipment is connected to the vehicle’s Data Link Connecto ...





