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:
Adding Coolant to the
Intercooler System
Coolant (CTS-V)
1. Remove the intercooler system
pressure cap when the
intercooler system hoses are no
longer hot. Turn the pressure
cap slowly counterclockwise
about one-quarter of a turn.
If you hear a ...
Recreational Vehicle
Towing
Recreational vehicle towing means
towing the vehicle behind another
vehicle – such as behind a
motorhome. The two most common
types of recreational vehicle towing
are known as dinghy towing ...
Engine Oil
To ensure proper engine performance and long life, careful attention must be
paid to engine oil. Following these simple, but important steps will help
protect your investment:
- Always use engine ...