warning light GMC YUKON HYBRID 2010 User Guide

Driver Information Center (DIC)
Trip/Fuel Menu Items
Press the trip/fuel button to display the Trip/Fuel Menu
items. For more items see“DIC Operation and
Displays” in the owner manual.
BATTERY VOLTAGE
This display shows the current battery voltage. If the
voltage is in the normal range, the value will display.
For example, the display may read BATTERY
VOLTAGE 13.2 VOLTS. If the voltage is high or low,
the display will read HIGH or LOW. Your vehicle's
charging system regulates voltage based on the state
of the battery. The battery voltage may fluctuate when
viewing this information on the DIC. This is normal.
See“Charging System Light” in the owner manual for
more information. If there is a problem with the battery
charging system, the DIC will display a message.
See DIC Warnings and Messages on page 4‑12.
INST ECON (Instantaneous Economy)
This display normally shows instantaneous fuel
economy. When the vehicle is in Auto Stop mode
AUTO STOP or INST ECON = 99 MPG (l/00km) will be
displayed. See Starting the Vehicle
on page 3‑3for
more information.
DIC Warnings and Messages
Warning messages are displayed on the DIC to notify
the driver that the status of the vehicle has changed
and that some action may be needed by the driver to
correct the condition. If there is more than one message
that needs to be displayed they will appear one after
another.
Some messages may not require immediate action, but
you can press any of the DIC buttons on the instrument
panel or the trip odometer reset stem to acknowledge
that you received the messages and to clear them from
the display.
Some messages cannot be cleared from the DIC
display because they are more urgent. These
messages require action before they can be cleared.
You should take any messages that appear on the
display seriously and remember that clearing the
messages will only make the messages disappear, not
correct the problem.
For information on other DIC messages, see “DIC
Warnings and Messages” in the owner manual Index.
HOOD OPEN
If the hood is not fully closed or there is a problem with
the hood switch, this message will be displayed. Close
the hood to clear the message. If the HOOD OPEN
message continues to be displayed after verifying the
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hood is closed, you should have the hood switch
serviced. Failure to service the hood switch properly
can result in an Auto Start condition.
Auto Stops will be disabled when this message is
displayed. If the vehicle is in auto stop mode when this
message appears, the engine will instantly start.
OIL PRESSURE LOW STOP ENGINE
If engine oil pressure is low, this message will be
displayed on the DIC. Stop the vehicle as soon as
safely possible and do not operate it until the cause of
the low oil pressure has been corrected. Check your oil
level as soon as possible and have your vehicle
serviced. See“Engine Oil”in the owner manual Index.
SERVICE 4 WHEEL DRIVE
This message may display if a problem occurs with the
four-wheel-drive system. If this message appears, stop
as soon as possible and turn off the vehicle. Make sure
the key is in the LOCK/OFF position for at least
one minute and then restart the vehicle and check for
the message on the DIC display. If the message is still
displayed or appears again when you begin driving,
the four-wheel-drive system needs service. See your
dealer/retailer.
SERVICE BATTERY CHARGING
SYSTEM
If the 12V battery system faults or fails this message will
appear on the DIC. The battery/charging system light
will appear in the instrument panel cluster. See “Battery
Warning Light” in the owner manual Index. Driving with
this message on could drain the battery. Have the
electrical system checked as soon as possible.
SERVICE BRAKE SYSTEM
This message will be displayed if there is a problem
with the brake system. You will still be able to brake, but
it will be noticeably more difficult. Pull off the road to a
safe location and have your vehicle towed to the
nearest dealer/retailer for service. See “Brakes,”
“Brake System Warning Light,” and“ABS Brake System
Warning Light” in the owner manual Index.
SERVICE HYBRID SYSTEM
If this message is displayed on the DIC, the vehicle may
continue to operate, but you need to have it serviced as
soon as possible.
SERVICE POWER STEERING
This message displays if a problem has been detected
with the electric power steering. Have your vehicle
serviced by your dealer/retailer immediately.
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Power Steering Fluid
The vehicle has electric power steering and does not
use power steering fluid.
Brakes
Brake Fluid
The brake master cylinder
reservoir is filled with
DOT 3 brake fluid. See
Engine Compartment
Overview
on page 6‑4for the location of the
reservoir.
There are only two reasons why the brake fluid level in
the reservoir might go down:
.The brake fluid level goes down because of normal
brake lining wear. When new linings are installed,
the fluid level goes back up.
.A fluid leak in the brake hydraulic system can also
cause a low fluid level. Have the brake hydraulic
system fixed, since a leak means that sooner or
later the brakes will not work well.
Do not top off the brake fluid. Adding fluid does not
correct a leak. If fluid is added when the linings are
worn, there will be too much fluid when new brake
linings are installed. Add or remove brake fluid, as
necessary, only when work is done on the brake
hydraulic system.
{WARNING:
If too much brake fluid is added, it can spill on the
engine and burn, if the engine is hot enough.
You or others could be burned, and the vehicle
could be damaged. Add brake fluid only when
work is done on the brake hydraulic system.
See “Checking Brake Fluid” in this section.
When the brake fluid falls to a low level, the brake
warning light comes on. See “Brake System Warning
Light” in the owner manual.
Refer to the Maintenance Schedule to determine when
to check the brake fluid. See “Scheduled Maintenance”
in the owner manual.
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Notice:
.Using the wrong fluid 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 fluid.
.If brake fluid is spilled on the vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
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.
{WARNING:
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.
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If the vehicle has a remote positive (+), it is located
under a red plastic cover at the positive battery
post. To uncover the remote positive (+) terminal,
open the red plastic cover.
5. The remote negative (−) is a solid engine ground.
{WARNING:
An electric fan can start up even when the engine
is not running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.
{WARNING:
Using an open flame near a battery can cause
battery gas to explode. People have been hurt
doing this, and some have been blinded. Use a
flashlight if you need more light.
Be sure the battery has enough water. You do not
need to add water to the battery installed in your
new vehicle. But if a battery has filler caps, be
sure the right amount of fluid is there. If it is low,
add water to take care of that first. If you do not,
explosive gas could be present. (Continued)
6-20

When to Check
Check your tires once a month or more.
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
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additional information and details about the DIC
operation and displays seeDIC Warnings and
Messages
on page 4‑12. Also, see “DIC Operation and
Displays” in the Index of the owner manual for more
information.
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 see Inflation - Tire Pressure on page 6‑28. 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. See Tire Sealant and
Compressor Kit (Without Selector Switch)
on
page 6‑35or Tire Sealant and Compressor Kit
(With Selector Switch) on page 6‑45.
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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.
.One or more TPMS sensors are missing or
damaged. The DIC message and the TPMS
malfunction light should go off when the TPMS
sensors are installed and the sensor matching
process is performed successfully. See your
dealer/retailer for service.
.Replacement tires or wheels do not match your
vehicle's original equipment tires or wheels.
Tires and wheels other than those recommended
for your vehicle could prevent the TPMS from
functioning properly. See “Buying New Tires”in
the Index of the owner manual.
.Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMS
could cause the TPMS sensors to malfunction.
If the TPMS is not functioning it cannot detect or signal
a low tire condition. See your dealer/retailer for service
if the TPMS malfunction light and DIC message comes
on and stays on.
6-31

A
Alternating CurrentPower Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Audio System(s) Navigation/Radio System . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Automatic Transmission, Fluid . . . . . . . . . . . . . . . . . . . . . . .6-5
B
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
Belt Routing, Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13 Regenerative Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Bulb Replacement Taillamps, Turn Signal, Stoplamps andBack-up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
C
Canadian Owners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Capacities and Specifications . . . . . . . . . . . . . . . . . . . . . . 6-57
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
Charging System Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Climate Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Compressor Kit, Tire Sealant . . . . . . . . . . . . . . . . 6-35, 6-45
Coolant
Engine Temperature Gage . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Coolant Surge Tank Pressure Cap, (DMCM) . . . . . . . . .6-8
Cooling System, (DMCM) . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9
D
Drive Motor/Generator Control Module (DMCM) Coolant Surge Tank Pressure Cap . . . . . . . . . . . . . . . . .6-8
Drive Motor/Generator Control Module (DMCM) Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . 4-12
Warnings and Messages . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
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E
EngineCompartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Coolant Temperature Gage . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Engine Coolant Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
F
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
Fluid Power Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Fuel Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Fuel Economy Gage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
G
Gages Engine Coolant Temperature . . . . . . . . . . . . . . . . . . . . . . 4-8
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Fuel Economy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Oil Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
H
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . .6-3
I
Inflation - Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-28
Instrument Panel Cluster . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
J
Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
L
LightsAntilock Brake System (ABS) Warning . . . . . . . . . . . . . 4-7
Brake System Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Charging System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Oil Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
StabiliTrak
®Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Lumbar Manual Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
i - 2