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 
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Advisor can run a check.
See also:
Trailer Towing
(Except CTS-V and
Coupe)
Before pulling a trailer, there are
three important considerations that
have to do with weight:
- The weight of the trailer.
- The weight of the trailer tongue.
- The total weight on the vehicl ...
Driver Information Center (DIC)
The DIC display is located in the center of the instrument panel cluster. It
shows the status of many vehicle systems. The controls for the DIC are located
on the turn signal lever.
A. SET/CL ...
Cruise Control
CTS Shown, CTS–V Similar
The cruise control buttons are
located on the left side of the
steering wheel.
: Press to turn the system on or
off. The indicator light on the button
turns on wh ...