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:
Engine Compartment
Fuse Block
(CTS-V Wagon)
The underhood fuse block is
located on the left side of the engine
compartment.
Lift the fuse block cover to access
the fuses.
The vehicle may not be equipped
with all of the fuses and rel ...
Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits.
If one circuit is not working, the remaining circuit can still work to stop
the vehicle. For normal braking performance, both circuits ...
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
t ...