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:
Front Turn Signal/Parking/Side Marker Lamps (Base and Up-Level)
To replace the front turn signal, parking lamp, or sidemarker lamp:
1. For the driver side bulb, remove the windshield washer bottle filler neck by firmly pulling it straight up and out of the bottle ...
Engine Coolant Temperature
Warning Light
This light comes on briefly
while starting the vehicle.
If it does not, have the vehicle serviced by the
dealer/retailer. If the system is working normally the
indicator light goes off.
Noti ...
Fuel Gauge
When the ignition is on, the fuel gauge tells you about how much fuel you have
left in your tank.
An arrow on the fuel gauge indicates the side of the vehicle the fuel door is
on.
When the fue ...