warning light GMC YUKON HYBRID 2009 User Guide

Notice:
Using the wrong uid can badly damage brake
hydraulic system parts. For example, just a
few drops of mineral-based oil, such as engine
oil, in the brake hydraulic system can damage
brake hydraulic system parts so badly that they
will have to be replaced. Do not let someone
put in the wrong kind of uid.
If brake uid is spilled on the vehicle’s painted
surfaces, the paint nish can be damaged.
Be careful not to spill brake uid on the
vehicle. If you do, wash it off immediately.
See “Washing Your Vehicle” in the owner
manual.
Brake Wear
This vehicle has disc brakes. Disc brake pads have
built-in wear indicators that make a high-pitched warning
sound when the brake pads are worn and new pads
are needed. The sound can come and go or be heard all
the time the vehicle is moving, except when applying
the brake pedal firmly.
{CAUTION:
The brake wear warning sound means that soon
the brakes will not work well. That could lead to an
accident. When the brake wear warning sound is
heard, have the vehicle serviced.
Notice:Continuing to drive with worn-out brake
pads could result in costly brake repair.
Some driving conditions or climates can cause a brake
squeal when the brakes are first applied or lightly
applied. This does not mean something is wrong with
the brakes.
5-13

How to Check
Use a good quality pocket-type gage to check tire
pressure. You cannot tell if your tires are properly
inflated simply by looking at them. Radial tires may look
properly inflated even when they’re underinflated.
Check the tire’s inflation pressure when the tires are cold.
Cold means your vehicle has been sitting for at least
three hours or driven no more than 1 mile (1.6 km).
Remove the valve cap from the tire valve stem.
Press the tire gage firmly onto the valve to get a
pressure measurement. If the cold tire inflation pressure
matches the recommended pressure on the tire and
loading information label, no further adjustment is
necessary. If the pressure is low, add air until you
reach the recommended amount.
If you overfill the tire, release air by pushing on the
metal stem in the center of the tire valve. Recheck the
tire pressure with the tire gage.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor System
(TPMS). The TPMS is designed to warn the driver
when a low tire pressure condition exists. TPMS sensors
are mounted onto each tire and wheel assembly.
The TPMS sensors monitor the air pressure in the
vehicle’s tires and transmit the tire pressure readings
to a receiver located in the vehicle.
When a low tire pressure
condition is detected, the
TPMS will illuminate
the low tire pressure
warning symbol located
on the instrument
panel cluster.
At the same time a message to check the pressure in a
specific tire appears on the Driver Information Center
(DIC) display. The low tire pressure warning light
and the DIC warning message come on at each ignition
cycle until the tires are inflated to the correct inflation
pressure. Using the DIC, tire pressure levels can
be viewed by the driver. For additional information and
details about the DIC operation and displays seeDIC
Warnings and Messages on page 3-12. Also, see “DIC
Operation and Displays” in the Index of the owner
manual for more information.
5-25

The low tire pressure warning light may come on in cool
weather when the vehicle is first started, and then
turn off as you start to drive. This could be an early
indicator that the air pressure in the tire(s) are getting
low and need to be inflated to the proper pressure.
A Tire and Loading Information label, attached to your
vehicle, shows the size of your vehicle’s original
equipment tires and the correct inflation pressure for
your vehicle’s tires when they are cold. See “Loading
Your Vehicle” for an example of the Tire and Loading
Information label and its location on your vehicle.
Also seeInflation - Tire Pressure on page 5-24.
Your vehicle’s TPMS can warn you about a low tire
pressure condition but it does not replace normal
tire maintenance. See “Tire Inspection and Rotation”
and “Tires” in the Index of the owner manual for more
information.
Notice:Using non-approved tire sealants could
damage the Tire Pressure Monitor System (TPMS)
sensors. TPMS sensor damage caused by using
an incorrect tire sealant is not covered by the
vehicle warranty. Always use the GM approved tire
sealant available through your dealer/retailer.Your vehicle, when new, included a factory-installed
Tire Sealant and Compressor Kit. This kit uses a
GM approved liquid tire sealant. SeeTire Sealant and
Compressor Kit (Without Selector Switch) on page 5-32
orTire Sealant and Compressor Kit (With Selector
Switch) on page 5-42.
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 minute and then stays on for
the remainder of the ignition cycle. A DIC warning
message is also displayed. The low tire warning light
and DIC warning message come on at each ignition
cycle until the problem is corrected. Some of the
conditions that can cause the malfunction light and
DIC message to come on are:
•The TPMS sensor matching process was started
but not completed or not completed successfully
after rotating the vehicle’s tires. The DIC message
and TPMS malfunction light should go off once
the TPMS sensor matching process is performed
successfully. See “TPMS Sensor Matching Process”
later in this section.
5-26

A
Alternating Current
Power Outlet................................................ 2-2
Antilock Brake, System Warning Light.................. 3-7
Audio System(s)
Navigation/Radio System..............................3-14
Automatic Transmission, Fluid............................ 5-5
B
Battery..........................................................5-15
Brake Fluid....................................................5-11
Brakes..........................................................5-11
Regenerative Braking...................................2-10
System Warning Light.................................... 3-6
Bulb Replacement
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-21
C
Canadian Owners................................................ ii
Capacities and Specifications............................5-52
Chains, Tire...................................................5-30
Charging System Light...................................... 3-4Climate Controls............................................... 3-2
Compressor Kit
Storing.......................................................5-50
Compressor Kit, Tire Sealant....................5-32, 5-42
Coolant
Engine Temperature Gage.............................. 3-8
Coolant Surge Tank Pressure Cap, (DMCM)......... 5-6
Cooling System, (DMCM).................................. 5-6
D
Drive Motor/Generator Control Module (DMCM)
Coolant Surge Tank Pressure Cap................... 5-6
Drive Motor/Generator Control Module (DMCM)
Cooling System............................................. 5-6
Driver Information Center (DIC).........................3-12
Warnings and Messages...............................3-12
E
Engine
Compartment Overview.................................. 5-4
Coolant Temperature Gage............................. 3-8
Drive Belt Routing......................................... 6-2
1

F
Flat Tire........................................................5-30
Fluid, Power Steering......................................5-11
Fuel
Gage .........................................................3-11
Fuel Economy Gage......................................... 3-5
G
Gage
Engine Coolant Temperature........................... 3-8
Fuel..........................................................3-11
Fuel Economy.............................................. 3-5
Oil Pressure................................................. 3-8
Tachometer.................................................. 3-4
H
High Voltage Devices and Wiring........................ 5-3
I
Inflation - Tire Pressure...................................5-24
Inflator Kit, Tire.......................................5-32, 5-42
Instrument Panel Cluster................................... 3-3
Introduction........................................................ iii
J
Jump Starting.................................................5-16
L
Light
Antilock Brake System (ABS) Warning.............. 3-7
Brake System Warning................................... 3-6
Charging System........................................... 3-4
Oil Pressure...............................................3-10
StabiliTrak
®Indicator..................................... 3-7
Lumbar
Manual Controls............................................ 1-2
2