Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if the
vehicle is equipped with the Tire
Pressure Monitoring System. If a
diagnostics check is needed
between e-mails, push 
, and an
Advisor can run a check.
See also:
Transmission
Automatic Transmission
Driver Shift Control (DSC)
Driver Shift Control (DSC) allows
shifting an automatic transmission
similar to a manual transmission.
DSC can be enabled through the
shift l ...
Exterior Lighting
The exterior lamp control is located
on the instrument panel on the
outboard side of the steering wheel.
Turn the control to the following
positions:
: Turns off the exterior lamps.
The kn ...
Off-Road Recovery
The vehicle's right wheels can drop off the edge of a road onto the shoulder
while driving. Follow these tips:
1. Ease off the accelerator and then, if there is nothing in the way, steer the ...