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:
Magnetic Ride Control
The V-Series reaches elite levels of road-holding performance, but also
maintains the poise of a luxury car in "regular" driving conditions. The
technical enabler of that dual-mode drivi ...
Courtesy Rental Vehicle
Your dealer may arrange to provide
you with a courtesy rental vehicle or
reimburse you for a rental vehicle
that you obtain if the vehicle is kept
for an overnight warranty repair.
Rental rei ...
Collision Damage Repair
(U.S. and Canada)
If the vehicle is involved in a
collision and it is damaged,
have the damage repaired by a
qualified technician using the proper
equipment and quality replacement
parts. Poorly performed col ...