Electrical System
See also:
Roof Rack System
The roof rack cross rails can be locked in four positions along the roof rack
side rails. Lift the lever to release and move the cross rail. Push the lever down
to completely engage into the side ...
Electronic Range Select (ERS) Mode
ERS or manual mode allows for the selection of the range of gear positions. Use
this mode when driving down hill or towing a trailer to limit the top gear and vehicle
speed.
To use this feature:
...
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 ...





