Cellular and GPS Antennas
Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception.
Cellular reception is required for OnStar to send remote signals to the vehicle.
See also:
Hydraulic Power Steering
Your vehicle has hydraulic power steering. It may require maintenance. See Power
Steering Fluid Power Steering Fluid .
If power steering assist is lost because the engine stops or the power s ...
Trailer Sway Control (TSC)
The vehicle has a Trailer Sway Control (TSC) feature as part of the
StabiliTrak system.
If TSC detects that the trailer is swaying, the vehicle's brakes are
automatically applied.
When TSC ...
STABILITRAK
COMPETITIVE MODE
This message displays when the
Competitive Driving Mode is
selected. When in this mode, the
Traction Control System (TCS)
will not be operating and the
TCS/StabiliTrak warning light will
t ...