Front Axle
............................................... 6-47
Headlamp Aiming
..................................... 6-48
Bulb Replacement
.................................... 6-51
Windshield Wiper Blade Replacement
......... 6-54
Tires
...................................................... 6-56
Appearance Care
..................................... 6-96
Vehicle Identi cation
............................... 6-104
Electrical System
.................................... 6-105
Capacities and Speci cations
................... 6-113 Maintenance Schedule ..................................... 7-1
Maintenance Schedule
................................ 7-2
Customer Assistance Information .................... 8-1
Customer Assistance and Information
........... 8-2
Reporting Safety Defects
........................... 8-14
Vehicle Data Recording and Privacy
........... 8-16
Index ................................................................ 1
Adding Equipment to Your
Airbag-Equipped Vehicle
Q: Is there anything I might add to or change
about the vehicle that could keep the airbags
from working properly?
A: Yes. If you add things that change the vehicle’s
frame, bumper system, height, front end or side
sheet metal, they may keep the airbag system from
working properly. Changing or moving any parts
of the front seats, safety belts, the airbag sensing
and diagnostic module, steering wheel, instrument
panel, roof-rail airbag modules, ceiling headliner
or pillar garnish trim, overhead console, front
sensors, side impact sensors, rollover sensor
module, or airbag wiring can affect the operation of
the airbag system.
In addition, the vehicle has a passenger sensing
system for the right front passenger position, which
includes sensors that are part of the passenger
seat. The passenger sensing system may not
operate properly if the original seat trim is replaced
with non-GM covers, upholstery or trim, or with
GM covers, upholstery or trim designed for a
different vehicle. Any object, such as an aftermarket
seat heater or a comfort enhancing pad or device,
installed under or on top of the seat fabric, could also interfere with the operation of the
passenger sensing system. This could either
prevent proper deployment of the passenger
airbag(s) or prevent the passenger sensing system
from properly turning off the passenger airbag(s).
See Passenger Sensing System on page 1-87 .
If you have any questions, call Customer
Assistance. The phone numbers and addresses for
Customer Assistance are in Step Two of the
Customer Satisfaction Procedure in this manual.
See Customer Satisfaction Procedure on page 8-2 .
If the vehicle has rollover roof-rail airbags, see
Different Size Tires and Wheels on page 6-73 for
additional important information.
Q: Because I have a disability, I have to get my
vehicle modi ed. How can I nd out whether
this will affect my airbag system?
A: If you have questions, call Customer Assistance.
The phone numbers and addresses for Customer
Assistance are in Step Two of the Customer
Satisfaction Procedure in this manual. See
Customer Satisfaction Procedure on page 8-2 .
In addition, your dealer/retailer and the service manual
have information about the location of the airbag sensors,
sensing and diagnostic module and airbag wiring.
1-94
M (Manual Mode): This position lets drivers select the
range of gears appropriate for current driving conditions.
See Driver Shift Control (DSC) later in this section.
Notice: Spinning the tires or holding the vehicle in
one place on a hill using only the accelerator pedal
may damage the transmission. The repair will not be
covered by the vehicle warranty. If you are stuck, do
not spin the tires. When stopping on a hill, use the
brakes to hold the vehicle in place.
The vehicle has a shift stabilization feature that adjusts
the transmission shifting to the current driving conditions
in order to reduce rapid upshifts and downshifts. This shift
stabilization feature is designed to determine, before
making an upshift, if the engine will be able to maintain
vehicle speed by analyzing things such as vehicle speed,
throttle position and vehicle load. If the shift stabilization
feature determines that a current vehicle speed cannot be
maintained, the transmission does not upshift and instead
holds the current gear. In some cases, this may appear to
be a delayed shift, however the transmission is operating
normally. The vehicle’s transmission uses adaptive shift controls
that compares key shift parameters to pre-programmed
ideal shifts stored in the transmissions computer.
The transmission constantly makes adjustments to
improve vehicle performance according to how the
vehicle is being used, such as with a heavy load or when
temperature changes. During this adaptive shift controls
process, shifting may feel different as the transmission
determines the best settings.
When temperatures are very cold, the Hydra-Matic ®
6L80 automatic transmission’s gear shifting may
be delayed providing more stable shifts until the engine
warms up. Shifts may be more noticeable with a cold
transmission. This difference in shifting is normal.
2-31
Engine Coolant Temperature Gage This gage shows
the engine coolant
temperature.
If the indicator on the gage moves towards the shaded
area on the thermostat, it means that the engine coolant
has overheated. If the vehicle has been operating under
normal driving conditions, pull off the road, stop the
vehicle and turn off the engine as soon as possible.
See Engine Overheating on page 6-30 .Tire Pressure Light For vehicles with a tire
pressure monitoring
system, this light comes
on brie y when the engine
is started.
It provides information about tire pressures and the
Tire Pressure Monitoring System.
When the Light is On Steady This indicates that one or more of the tires is signi cantly
underin ated.
A tire pressure message in the Driver Information
Center (DIC), can accompany the light. See DIC
Warnings and Messages on page 3-56 for more
information. Stop and check the tires as soon as it is
safe to do so. If a tire is underin ated, in ate to the
proper pressure. See Tires on page 6-56 for more
information.
3-41