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:
Engine Coolant Temperature Warning Light
For eAssist vehicles, this light
comes on briefly while starting the
vehicle.
If it does not, have the vehicle
serviced by the dealer. If the system
is working normally, the indicator
lig ...
TPMS Malfunction Light and
Message
The TPMS will not function properly
if one or more of the TPMS sensors
are missing or inoperable. When the
system detects a malfunction, the
low tire warning light flashes for
about one minu ...
When to Inspect the Engine AirCleaner/Filter
Inspect the air cleaner/filter at the Maintenance II
intervals and replace at the first oil change after
each 50,000 mile (83 000 km) interval.
If you are driving in dusty/dirty
conditions, inspec ...