Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment on page 9‑112. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
New for 2011
The Sierra Hybrid gets GM's OnStar 9.0 telematics system that GM says
provides better voice recognition. GM also said they have worked to cut down on
the amount of wind noise occupants hear. ...
Headlamp Aiming
The vehicle has a visual optical headlamp aiming system. The aim of the headlamps has been preset at the factory and should need no further adjustment.
However, if the vehicle is damaged in a crash, ...
Hydroplaning
Hydroplaning is dangerous. Water can build up under the vehicle's tires so they
actually ride on the water. This can happen if the road is wet enough and you are
going fast enough. When the ve ...