2009 GMC YUKON HYBRID stop start

Driver Information Center (DIC)
Trip/Fuel Menu Items
Press the trip/fuel button to display the battery voltage.
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 low, the
display will show LOW. If the voltage is high, the display
will show HIGH. 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. SeeDIC Warnings
and Messages on page 3-12.
INST (Instantaneous) ECONOMY
This display normally shows instantaneous fuel
economy. When the vehicle is in Auto Stop mode
AUTO STOP will be displayed. SeeStarting the
Vehicle on page 2-3for more information. The display
may also show if the vehicle is currently in V4 MODE
or V8 MODE. See “Active Fuel Management” in
the owner manual for 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 should press the select button or the trip
odometer reset stem on the instrument panel cluster
to acknowledge that you received the message
and clear it from the display. Some messages cannot
be cleared from the display because they are more
urgent; these messages require action before they can
be removed from the DIC display. The following are
the possible messages that can be displayed and some
information about them. For information on other DIC
messages, see “DIC Warnings and Messages” in
the owner manual Index.
3-12

SERVICE BATTERY CHARGING
SYSTEM
If the hybrid battery system faults or fails this message
will appear on the DIC. The engine auto stop feature
will be disabled and the battery/charging system light will
appear in the instrument panel cluster. See “Battery
Warning Light” in the owner manual Index.
Driving with this light on could drain your batteries.
Have the electrical system checked as soon as possible.
Pressing the select button or the trip odometer reset
stem on the instrument panel cluster will acknowledge
this message and clear it from the DIC display.
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 hood is closed, you should have the hood
switch serviced. Pressing the select button or the
trip odometer reset stem on the instrument panel cluster
will acknowledge this message and clear it from the
DIC display.
When this message is displayed, the auto stop
function will not operate. 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 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.
3-13

Service............................................................5-2
Doing Your Own Service Work.........................5-2
Checking Things Under the Hood.....................5-3
High Voltage Devices and Wiring......................5-3
Engine Compartment Overview.........................5-4
Automatic Transmission Fluid...........................5-5
Drive Motor/Generator Control Module (DMCM)
Coolant Surge Tank Pressure Cap..................5-6
Drive Motor/Generator Control Module (DMCM)
Cooling System...........................................5-6
Power Steering Fluid.....................................5-11
Brakes........................................................5-11
Battery........................................................5-15
Jump Starting...............................................5-16
Bulb Replacement..........................................5-21
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.........................................5-21
Replacement Bulbs.......................................5-22Electrical System............................................5-22
Fuses and Circuit Breakers............................5-22
Underhood Fuse Block..................................5-22
Tires..............................................................5-24
Inflation - Tire Pressure.................................5-24
Tire Pressure Monitor Operation.....................5-25
Tire Inspection and Rotation...........................5-29
Tire Chains..................................................5-30
If a Tire Goes Flat........................................5-30
Tire Sealant and Compressor Kit
(Without Selector Switch)............................5-32
Tire Sealant and Compressor Kit
(With Selector Switch)................................5-42
Tire Sealant and Compressor Kit Storage.........5-50
Capacities and Specications..........................5-52
Section 5 Service and Appearance Care
5-1

2. Then keep turning the DMCM coolant surge tank
pressure cap slowly, and remove it.
3. Add the pre-mixed DEX-COOL™, available at your
dealer/retailer, to the DMCM coolant surge tank
until the level reaches the FULL COLD mark.
4. Turn the ignition to ON/RUN without starting the
engine. The hybrid cooling pumps will run and
any trapped air will purge to the surge tank.5. Add the pre-mixed DEX-COOL™, available at your
dealer/retailer, until the coolant level is maintained
at the FULL COLD mark. This should take no
longer than two minutes of hybrid cooling pump
operation.
If the level cannot be kept at the FULL COLD
level, your vehicle may need service. See your
dealer/retailer.
6. Then replace the
DMCM coolant surge
tank pressure cap.
Be sure the pressure
cap is hand-tight
and fully seated.
Notice:Using tap water, cooling system sealers or
conditioners in an attempt to stop coolant leaks
can damage the DMCM and engine cooling systems.
Never use tap water, cooling system sealers or
conditioners in your cooling system.
5-10

You have two minutes to match the first tire/wheel
position, and five minutes overall to match all four
tire/wheel positions. If it takes longer than two minutes,
to match the first tire and wheel, or more than
five minutes to match all four tire and wheel positions
the matching process stops and you need to start over.
The TPMS sensor matching process is outlined below:
1. Set the parking brake.
2. Turn the ignition switch to ON/RUN with the
engine off.
3. Press the Remote Keyless Entry (RKE) transmitter’s
LOCK and UNLOCK buttons at the same time for
approximately five seconds. The horn sounds twice
to signal the receiver is in relearn mode and TIRE
LEARNING ACTIVE message displays on the
DIC screen.
4. Start with the driver side front tire.
5. Remove the valve cap from the valve cap stem.
Activate the TPMS sensor by increasing or
decreasing the tire’s air pressure for five seconds,
or until a horn chirp sounds. The horn chirp,
which may take up to 30 seconds to sound,
confirms that the sensor identification code has
been matched to this tire and wheel position.6. Proceed to the passenger side front tire, and repeat
the procedure in Step 5.
7. Proceed to the passenger side rear tire, and repeat
the procedure in Step 5.
8. Proceed to the driver side rear tire, and repeat the
procedure in Step 5. The horn sounds two times to
indicate the sensor identification code has been
matched to the driver side rear tire, and the TPMS
sensor matching process is no longer active.
The TIRE LEARNING ACTIVE message on the
DIC display screen goes off.
9. Turn the ignition switch to LOCK/OFF.
10. Set all four tires to the recommended air pressure
level as indicated on the Tire and Loading
Information label.
11. Put the valve caps back on the valve stems.
5-28

S
Seats
Manual Lumbar............................................. 1-2
Manual Reclining Seatbacks........................... 1-3
Power Seats................................................. 1-2
Service, Doing Your Own Work.......................... 5-2
Specifications, Capacities.................................5-52
StabiliTrak
®Indicator Light................................. 3-7
Starting Your Vehicle......................................... 2-3
Storing the Tire Sealant and Compressor Kit......5-50
T
Tachometer...................................................... 3-4
Taillamps
Turn Signal, Stoplamps and
Back-up Lamps........................................5-21
Tire Sealant
Storing.......................................................5-50Tires
Chains.......................................................5-30
If a Tire Goes Flat.......................................5-30
Inflation, Pressure........................................5-24
Inspection and Rotation................................5-29
Tire Sealant and Compressor Kit...........5-32, 5-42
Towing
Towing Your Vehicle...................................... 4-2
Trailer.......................................................... 4-2
Transmission, Automatic Fluid............................. 5-5
V
Vehicle
Running While Parked..................................2-10
Voltage Devices, High and Wiring....................... 5-3
W
Wiring, High Voltage Devices............................. 5-3
4