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:
Storing a Favorite Station
For vehicles with an XM radio, a maximum of
36 stations can be stored as favorites using the
six softkeys located below the radio station frequency
tabs and by using the radio FAV button. Press ...
Power Door Locks
(Unlock): Press to unlock
all doors.
(Lock): Press to lock all
doors.
See “Power Door Locks” in Vehicle Personalization . ...
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 v ...