service indicator HUMMER H2 2009 User Guide

STABILITRAK OFF
This message displays when you turn off StabiliTrak,
or when the stability control has been automatically
disabled. To limit wheel spin and realize the full benets
of the stability enhancement system, you should normally
leave StabiliTrak on. However, you should turn
StabiliTrak off if your vehicle gets stuck in sand, mud, ice,
or snow and you want to rock your vehicle to attempt to
free it, or if you are driving in extreme off-road conditions
and require more wheel spin. SeeIf Your Vehicle is Stuck
in Sand, Mud, Ice, or Snow on page 4-39. To turn the
StabiliTrak system on or off, seeStabiliTrak
®System
on page 4-6.
There are several conditions that can cause this
message to appear.
The message displays if an engine or vehicle
related problem has been detected and the vehicle
needs service. See your dealer/retailer.
The message also displays if the vehicle is shifted
into 4LO.
The message turns off as soon as the conditions that
caused the message to be displayed are no longer
present.
TIGHTEN GAS CAP
This message may display along with the check engine
light on the instrument panel cluster if the vehicle’s
fuel cap is not tightened properly. SeeMalfunction
Indicator Lamp on page 3-40. Reinstall the fuel cap
fully. SeeFilling the Tank on page 5-8. The diagnostic
system can determine if the fuel cap has been left off or
improperly installed. A loose or missing fuel cap allows
fuel to evaporate into the atmosphere. A few driving trips
with the cap properly installed should turn this light and
message off.
TIRE LEARNING ACTIVE
On vehicles with the Tire Pressure Monitor
System (TPMS), this message displays when
the TPMS is re-learning the tire positions on your
vehicle. The tire positions must be re-learned after
rotating the tires or after replacing a tire or sensor.
SeeTire Inspection and Rotation on page 5-69,
Tire Pressure Monitor System on page 5-64, and
Inflation - Tire Pressure on page 5-63for more
information.
3-62

Fuels containing MMT can reduce the life of spark plugs
and the performance of the emission control system
could be affected. The malfunction indicator lamp might
turn on. If this occurs, return to your dealer/retailer for
service.
Fuel E85 (85% Ethanol)
This vehicle can use either unleaded gasoline or
85% ethanol fuel (E85). We encourage the use of
E85 in vehicles that are designed to use it. The ethanol
in E85 is a “renewable” fuel, meaning it is made from
renewable sources such as corn and other crops.
Many service stations will not have an 85% ethanol fuel
(E85) pump available. The U. S. Department of Energy
has an alternative fuels website (www.eere.energy.gov/
afdc/infrastructure/locator.html) that can help you nd
E85 fuel. Those stations that do have E85 should have a
label indicating ethanol content. Do not use the fuel if the
ethanol content is greater than 85%.
At a minimum, E85 should meet ASTM Specication
D 5798. By denition, this means that fuel labeled E85
will have an ethanol content between 70% and 85%.
Filling the fuel tank with fuel mixtures that do not meet
ASTM specications can affect driveability and could
cause the malfunction indicator lamp to come on.
To ensure quick starts in the wintertime, the E85 fuel
must be formulated properly for your climate according to
ASTM specication D 5798. If you have trouble startingon E85, it could be because the E85 fuel is not properly
formulated for your climate. If this happens, switching to
gasoline or adding gasoline to the fuel tank can improve
starting. For good starting and heater efficiency below
32°F (0°C), the fuel mix in the fuel tank should contain
no more than 70% ethanol. It is best not to alternate
repeatedly between gasoline and E85. If you do switch
fuels, it is recommended that you add as much fuel as
possible — do not add less than three gallons (11 L)
when refueling. You should drive the vehicle immediately
after refueling for at least seven miles (11 km) to allow the
vehicle to adapt to the change in ethanol concentration.
E85 has less energy per gallon than gasoline, so you will
need to rell the fuel tank more often when using E85
than when you are using gasoline. SeeFilling the
Tank on page 5-8.
Notice:Some additives are not compatible with
E85 fuel and can harm the vehicle’s fuel system.
Do not add anything to E85. Damage caused by
additives would not be covered by the vehicle
warranty.
Notice:This vehicle was not designed for fuel that
contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in the fuel
system and also damage plastic and rubber parts.
That damage would not be covered under the
vehicle warranty.
5-7

2. Lift the cover upward and set it aside.
3. Pull the air cleaner/lter up and out from the air
cleaner housing. Care should be taken to dislodge
as little dirt as possible.4. Clean the air cleaner/lter sealing surfaces and the
housing.
5. Inspect or replace the engine air cleaner/lter.
6. Reinstall the cover and tighten the screws.
7. Reset the air lter restriction indicator, if equipped,
by pressing the top button on the indicator.
If the vehicle is not equipped with the air lter
restriction indicator, refer to the Maintenance
Schedule to determine when to replace the engine
air cleaner/lter. SeeAdditional Required Services
on page 6-6.
5-22

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 rmly.
{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 rst applied or lightly applied.
This does not mean something is wrong with the brakes.Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts in
the proper sequence to torque specications in
Capacities and Specifications on page 5-117.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer/retailer if the brake pedal does not
return to normal height, or if there is a rapid increase in
pedal travel. This could be a sign that brake service
might be required.
Brake Adjustment
Every brake stop, the disc brakes adjust for wear.
5-40

Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-ination has
not reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is
not operating properly. The TPMS malfunction indicator
is combined with the low tire pressure telltale. When
the system detects a malfunction, the telltale will
ash for approximately one minute and then remain
continuously illuminated. This sequence will continue
upon subsequent vehicle start-ups as long as the
malfunction exists.
When the malfunction indicator is illuminated, the system
may not be able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a variety of
reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the TPMS
malfunction telltale after replacing one or more tires or
wheels on your vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to continue to
function properly.
SeeTire Pressure Monitor Operation on page 5-66for
additional information.Federal Communications Commission
(FCC) and Industry and Science Canada
The Tire Pressure Monitor System (TPMS) operates on
a radio frequency and complies with Part 15 of the
FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
The TPMS operates on a radio frequency and complies
with RSS-210 of Industry and Science Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
5-65

Locks
Delayed Locking..........................................2-11
Door ..........................................................2-10
Lockout Protection.......................................2-12
Power Door ................................................2-11
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-12
Loss of Control...............................................4-13
Low Fuel Warning Light...................................3-46
Lower Anchors and Tethers for Children.............1-51
Luggage Carrier..............................................2-65
Lumbar
Power Controls............................................. 1-5
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month................................6-10
At Least Once a Year..................................6-10
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-17
Maintenance Replacement Parts....................6-15
Maintenance Requirements............................. 6-2
Owner Checks and Services........................... 6-9Maintenance Schedule (cont.)
Recommended Fluids and Lubricants.............6-13
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-3
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Lamp...............................3-40
Memory Seat and Mirrors.................................. 1-6
Message
DIC Warnings and Messages........................3-56
Midgate
®.......................................................2-14
Mirrors
Automatic Dimming Rearview........................2-47
Outside Automatic Dimming Mirror.................2-48
Outside Convex Mirror.................................2-49
Outside Heated Mirrors................................2-49
Outside Power Foldaway Mirrors....................2-47
Park Tilt.....................................................2-48
MP3 .....................................................3-94, 3-99
MyGMLink.com................................................ 7-5
N
Navigation System, Privacy..............................7-18
Navigation/Radio System,
see Navigation Manual...............................3-107
New Vehicle Break-In......................................2-27
8

S
Safety Belt Reminders.....................................3-32
Safety Belts
Care of ....................................................5-105
How to Wear Safety Belts Properly................1-25
Lap-Shoulder Belt........................................1-34
Safety Belt Extender....................................1-39
Safety Belt Use During Pregnancy.................1-39
Safety Belts Are for Everyone.......................1-20
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
Bucket Seats, Rear......................................1-13
Heated Seats............................................... 1-6
Heated Seats - Rear....................................1-10
Memory, Mirrors............................................ 1-6
Power Lumbar .............................................. 1-5
Power Reclining Seatbacks............................. 1-8
Power Seats................................................. 1-4
Split Folding Rear Seat................................1-11
Third Row Seat...........................................1-14
Securing a Child Restraint
Rear Seat Position......................................1-62
Right Front Seat Position..............................1-64
Security Light.................................................3-44
Selectable Extended Rear Ride Height...............4-52Service........................................................... 5-3
Accessories and Modications......................... 5-3
Adding Equipment to the Outside of
the Vehicle................................................ 5-5
California Perchlorate Materials Requirements.... 5-4
California Proposition 65 Warning.................... 5-4
Doing Your Own Work................................... 5-4
Engine Soon Lamp......................................3-40
Publications Ordering Information...................7-15
Service, Scheduling Appointments.....................7-10
Servicing Your Airbag-Equipped Vehicle..............1-79
Setting the Clock............................................3-73
Sheet Metal Damage.....................................5-108
Shifting Into Park............................................2-43
Shifting Out of Park........................................2-44
Side Steps.....................................................4-33
Signals, Turn and Lane-Change.......................... 3-8
Spare Tire....................................................5-101
Carrier, Tailgate...........................................2-16
Installing....................................................5-90
Removing...........................................5-82, 5-86
Storing...............................................5-95, 5-98
Specications, Capacities...............................5-117
Speedometer..................................................3-31
Split Folding Rear Seat....................................1-11
StabiliTrak
®Indicator Light...............................3-38
StabiliTrak®System.......................................... 4-6
11