Service All-Wheel Drive Light
This light should come on briefly when you turn on the ignition, as a check to show you it is working.
The service all-wheel drive light comes on to indicate that there may be a problem with the drive system and service is required. Malfunctions can be indicated by the system before any problem is apparent, which may prevent serious damage to the vehicle. This system is also designed to assist your GM dealer in correctly diagnosing a malfunction.
See also:
Maintenance Requirements
Notice: Maintenance intervals, checks,
inspections, replacement parts, and
recommended fluids and lubricants as
prescribed in this manual are necessary to
keep your vehicle in good working conditi ...
Dual Tone Multi-Frequency (DTMF)
Tones
The in-vehicle Bluetooth system can send numbers and
numbers stored as name tags during a call. This is
used when calling a menu driven phone system.
Account numbers can be programmed into the
...
How to Reset the Engine Oil LifeSystem
The Engine Oil Life System calculates when to
change your engine oil and filter based on vehicle
use. Anytime your oil is changed, reset the
system so it can calculate when the next oil
change is ...