Emergency Services require an
active, OnStar service plan
(excludes Basic Plan). With
Automatic Crash Response, built-in
sensors can automatically alert a
specially trained OnStar Advisor
who is immediately connected in to
the vehicle to help.
Press for a priority connection to
an OnStar Advisor w
Special Tools
GE-42401-A Radiator Cap and Surge Tank Test Adapter
For equivalent regional tools, refer to Special Tools.
WARNING: To avoid being burned, do not remove the radiator cap or surge
tank
cap while the engine is hot. The cooling system will release scalding
fluid and steam under pressure