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:
Three—Way Calling
Three—way calling must be supported on the cell phone and enabled by the
wireless service carrier.
1. While on a call, press .
2. Say “Three—way call.” 3. Use the dial or call command to dial t ...
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 the ...
IntelliBeam® Intelligent High-Beam Headlamp Control System
For vehicles with this feature, be sure to read this entire section before using
it.
IntelliBeam is an enhancement to the vehicle's headlamp system.
Using a digital light sensor on the rearvie ...