check engine light HUMMER H3 2009 User Guide

CHANGE OIL
This message displays when the oil
needs to be changed. Check the
oil in the vehicle as soon as possible
and have the vehicle serviced by
your dealer/retailer. SeeEngine Oil
on page 5-13andScheduled
Maintenance on page 6-4for more
information. Press and release
the reset stem to acknowledge the
message and clear it from the
display.
DOORS
This message displays when one or
more of the doors is ajar. Check
all the doors on the vehicle to make
sure they are closed. The message
clears from the display after all
of the doors are closed.
ENG (Engine) HOT
This message displays when the
engine coolant temperature is
hot. Check the engine coolant
temperature gage. SeeEngine
Coolant Temperature Gage
on page 3-29. Have the vehicleserviced by your dealer/retailer as
soon as possible if you suspect
the engine is overheating. See
Engine Overheating on page 5-27
for more information.
FLUID
This message displays if the brake
uid is low. Check the brake
uid as soon as possible and have
the vehicle serviced by your
dealer/retailer. SeeBrakes on
page 5-30for more information.
Press and release the reset stem to
acknowledge the message and
clear it from the display.
FUEL CAP
This message displays if the
vehicle’s fuel cap is either off or
loose. Pull over as soon as possible
and check to see if the fuel cap is
secure. You may also see the check
engine light on the instrument
panel cluster. If the check engine
light does come on when the
fuel cap was loose, it may take a
few driving trips before the lightturns off. SeeMalfunction Indicator
Lamp on page 3-30for more
information if the light still remains
on. Press and release the reset
stem to acknowledge the message
and clear it from the display.
HSA (Hill Start Assist) ON
This message displays when the Hill
Start Assist is enabled. See
Braking on page 4-3for more
information.
LOW FUEL
This message displays if the level of
fuel in the vehicle is low. Also
check the fuel gage. SeeFuel Gage
on page 3-33for more information.
Rell the fuel tank as soon as
possible.
LOW TIRE
On vehicles with the Tire Pressure
Monitor System (TPMS), this
message displays if a low tire
pressure is detected in any of the
vehicle’s tires. Press and release the
reset stem to acknowledge the
3-38 Instrument Panel

message and clear it from the
display. The message appears at
each ignition cycle until the tires are
inated to the correct ination
pressure. SeeTires on page 5-44
andInflation - Tire Pressure on
page 5-51for more information on
tires and the correct ination
pressures.
OIL
This message displays when the oil
pressure is low. SeeOil Pressure
Light on page 3-32andEngine
Oil on page 5-13for more
information.
PARK BRK (Brake)
This message displays when the
parking brake is set. SeeParking
Brake on page 2-28andBrake
System Warning Light on page 3-27
for more information. The message
clears from the display after the
parking brake is released or by
pressing and releasing the
reset stem.
REDUCED POWER
This message displays when the
vehicle’s engine power is reduced.
Reduced engine power can
affect the vehicle’s ability to
accelerate. If this message is on,
but there is no reduction in
performance, proceed to your
destination. The performance may
be reduced the next time the vehicle
is driven. The vehicle may be
driven at a reduced speed while this
message is on, but acceleration
and speed may be reduced. Anytime
this message stays on, the vehicle
should be taken to your
dealer/retailer for service as soon as
possible. Press and release the
reset stem to acknowledge
the message and clear it from the
display.
SERV (Service) 4WD
(Four-Wheel Drive)
This message displays when there
is a problem with the transfer
case control system. Check the
transfer case on the vehicleand have it serviced by your
dealer/retailer. SeeFull-Time
Four-Wheel Drive on page 2-24for
more information about the
transfer case. Press and release the
reset stem to acknowledge the
message and clear it from the
display.
SERV (Service) TPM
(Tire Pressure Monitor)
On vehicles with the Tire Pressure
Monitor System (TPMS), this
message displays if a part on the
TPMS is not working properly.
The tire pressure light also ashes
and then remains on during the
same ignition cycle. SeeTire
Pressure Light on page 3-30.
Several conditions may cause this
message to appear. SeeTire
Pressure Monitor Operation on
page 5-54for more information. If
the warning comes on and stays on,
there may be a problem with the
TPMS. See your dealer/retailer.
Instrument Panel 3-39

Antilock Brake
System (ABS)
This vehicle has the Antilock Brake
System (ABS), an advanced
electronic braking system that will
help prevent a braking skid.
When the engine is started and the
vehicle begins to drive away,
ABS checks itself. A momentary
motor or clicking noise might
be heard while this test is going on.
This is normal.
If there is a problem with ABS, this
warning light stays on. See
Antilock Brake System (ABS)
Warning Light on page 3-28.Let us say the road is wet and you
are driving safely. Suddenly, an
animal jumps out in front of you. You
slam on the brakes and continue
braking. Here is what happens
with ABS:
A computer senses that the wheels
are slowing down. If one of the
wheels is about to stop rolling, the
computer will separately work
the brakes at each wheel.
ABS can change the brake pressure
to each wheel, as required, faster
than any driver could. This can help
the driver steer around the
obstacle while braking hard.
As the brakes are applied, the
computer keeps receiving updates
on wheel speed and controls braking
pressure accordingly.Remember: ABS does not change
the time needed to get a foot
up to the brake pedal or always
decrease stopping distance. If you
get too close to the vehicle in
front of you, there will not be enough
time to apply the brakes if that
vehicle suddenly slows or stops.
Always leave enough room up
ahead to stop, even with ABS.
Using ABS
Do not pump the brakes. Just hold
the brake pedal down rmly and
let antilock work. The brakes might
vibrate or some noise might be
heard, but this is normal.
Driving Your Vehicle 4-5

Maintenance When Trailer
Towing
The vehicle needs service more
often when pulling a trailer. See this
manual’s Maintenance Schedule
or Index for more information.
Things that are especially important
in trailer operation are automatic
transmission uid, engine oil,
axle lubricant, belts, cooling system
and brake system. It is a good
idea to inspect these before and
during the trip.
Check periodically to see that all
hitch nuts and bolts are tight.
Trailer Wiring Harness
Light-Duty Trailer Wiring Package
If the vehicle does not have a
trailer towing package, the chassis
harness will contain the following
blunt cut circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn
Signal
White: Ground
Brown: Tail Lamps
To add a trailer towing wiring
package, have it installed by your
dealer/retailer or a qualied
service center. Also, seeAdd-On
Electrical Equipment on page 5-91
for more information.Heavy-Duty Trailer Wiring
Package
If the vehicle has a trailer towing
package, the rear bumper harness
will have a seven-pin universal
heavy-duty trailer connector
attached to a bracket on the hitch
platform.
Driving Your Vehicle 4-51

(d)Inspect wiper blades for wear,
cracking, or contamination.
Clean the windshield and wiper
blades, if contaminated. Replace
wiper blades that are worn or
damaged. See Windshield Wiper
Blade Replacement on page 5-44
and Windshield, Backglass,
and Wiper Blades on page 5-87
for more information.
(e)Make sure the safety belt
reminder light and safety belt
assemblies are working properly.
Look for any other loose or
damaged safety belt system parts.
If you see anything that might
keep a safety belt system from doing
its job, have it repaired. Have any
torn or frayed safety belts replaced.
Also see Checking the Restraint
Systems on page 1-60.
(f)Lubricate all key lock cylinders,
hood latch assembly, secondary
latch, pivots, spring anchor, release
pawl, rear compartment hinges,
outer endgate handle pivot points,
rear door detent link, rollermechanism, endgate handle pivot
points, latch bolt, fuel door hinge,
locks, and folding seat hardware.
More frequent lubrication may
be required when exposed to a
corrosive environment. Applying
silicone grease on weatherstrips
with a clean cloth will make
them last longer, seal better, and
not stick or squeak.
(g)Check vent hose at transfer
case for kinks and proper
installation.
(h)Change automatic transmission
fluid and filter if the vehicle is
mainly driven under one or more of
these conditions:
In heavy city traffic where the
outside temperature regularly
reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer
towing.
Uses such as found in taxi,
police, or delivery service.(i)Drain, flush, and refill cooling
system. This service can be
complex; you should have your
dealer/retailer perform this service.
See Engine Coolant on page 5-23
for what to use. Inspect hoses.
Clean radiator, condenser,
pressure cap, and filler neck.
Pressure test the cooling system
and pressure cap.
(j)A fluid loss in any vehicle system
could indicate a problem. Have the
system inspected and repaired
and the fluid level checked. Add fluid
if needed.
(k)Visually inspect belt for fraying,
excessive cracks, or obvious
damage. Replace belt if necessary.
6-8 Maintenance Schedule

Audio System(s)..................3-42
Automatic Headlamp
System...........................3-14
Automatic Transmission
Fluid...............................5-18
Operation........................2-19
B
Battery...............................5-33
Electric Power
Management.................3-17
Run-Down Protection.........3-17
Bench Seat,
Split (60/40)................1-7, 1-9
Bluetooth
®..........................3-52
Brake
Emergencies...................... 4-6
Brake Fluid.........................5-30
Brakes...............................5-30
System Warning Light.......3-27
Braking................................ 4-3
Braking in Emergencies.......... 4-6
Break-In, New Vehicle..........2-15
Bulb Replacement................5-41
Halogen Bulbs..................5-41
Headlamp Aiming..............5-39
Headlamps......................5-41Bulb Replacement (cont.)
License Plate Lamps.........5-43
Replacement Bulbs...........5-43
Taillamps, Turn Signal,
Stoplamps and Back-up
Lamps .........................5-42
Buying New Tires.................5-59
C
Calibration..........................2-34
California Fuel....................... 5-5
California Perchlorate
Materials Requirements....... 5-4
California Proposition
65 Warning........................ 5-4
Canadian Owners..................... ii
Capacities and
Specications...................5-96
Carbon Monoxide....2-7, 2-9, 2-31
Care of
Safety Belts.....................5-85
Cargo Cover.......................2-49
Cargo Management System . . . 2-49
Cargo Tie Downs.................2-49
Center Console
Storage Area....................2-47
Chains, Tire........................5-65
Charging System Light..........3-27Check
Engine Lamp...................3-30
Checking Things Under
the Hood ........................... 5-9
Chemical Paint Spotting........5-90
Child Restraints
Child Restraint Systems.....1-31
Infants and Young
Children.......................1-28
Lower Anchors and Tethers
for Children..................1-34
Older Children..................1-25
Securing a Child Restraint
in a Rear Outside Seat
Position.......................1-41
Securing a Child Restraint
in the Center Rear Seat
Position.......................1-43
Securing a Child Restraint
in the Right Front Seat
Position.......................1-43
Where to Put the
Restraint......................1-32
Cigarette Lighter..................3-18
Cleaning
Aluminum or
Chrome-Plated Wheels . . . 5-88
Exterior Lamps/Lenses......5-86
Fabric/Carpet...................5-84
i-2 INDEX

Driving (cont.)
Hill and Mountain Roads....4-30
In Rain and on
Wet Roads...................4-29
Off-Road .........................4-13
Recovery Loops...............4-34
Rocking Your Vehicle to
Get it Out ....................4-34
Winter.............................4-31
Driving for Better Fuel
Economy........................... 4-1
E
EDR ..................................7-16
Electrical System
Add-On Equipment............5-91
Engine Compartment Fuse
Block...........................5-92
Fuses and Circuit
Breakers......................5-91
Power Windows and Other
Power Options..............5-91
Windshield Wiper Fuses....5-91
Electronic Immobilizer
PASS-Key
®III+................2-13Electronic Immobilizer
Operation
PASS-Key
®III+................2-14
Engine
Air Cleaner/Filter...............5-17
Check and Service Engine
Soon Lamp..................3-30
Coolant...........................5-23
Coolant Heater.................2-19
Coolant
Temperature Gage.........3-29
Drive Belt Routing.............6-15
Engine Compartment
Overview......................5-10
Exhaust...........................2-31
Fan Noise.......................5-28
Oil ..................................5-13
Oil Life System.................5-15
Overheating.....................5-27
Starting...........................2-17
Event Data Recorders..........7-16
Exit Lighting........................3-16
Extender, Safety Belt............1-25
Exterior Lamps....................3-11
F
Filter
Engine Air Cleaner............5-17
Finish Damage....................5-89
Fixed Mast Antenna.............3-63
Flashers, Hazard Warning....... 3-5
Flash-to-Pass........................ 3-7
Flat Tire..............................5-66
Flat Tire, Changing...............5-66
Flat Tire, Storing..........5-78, 5-80
Fluid
Automatic Transmission.....5-18
Power Steering.................5-29
Windshield Washer...........5-30
Fog Lamp
Fog ................................3-15
Four-Wheel Drive.................5-38
Four-Wheel Drive,
Full-Time.........................2-24
Front Axle...........................5-39
Front Seat Storage Net.........2-47
Fuel..................................... 5-5
Additives........................... 5-6
California Fuel................... 5-5
Driving for Better
Economy....................... 4-1
i-4 INDEX

Fuel (cont.)
Filling a Portable Fuel
Container....................... 5-8
Filling the Tank.................. 5-7
Fuels in Foreign Countries . . . 5-7
Gage ..............................3-33
Gasoline Octane................ 5-5
Gasoline Specications........ 5-5
Fuses
Engine Compartment
Fuse Block...................5-92
Fuses and Circuit
Breakers......................5-91
Windshield Wiper..............5-91
G
Gage
Engine Coolant
Temperature.................3-29
Fuel................................3-33
Speedometer...................3-24
Tachometer......................3-24
Garage Door Opener............2-42Gasoline
Octane............................. 5-5
Specications..................... 5-5
Glove Box...........................2-47
GM Mobility Reimbursement
Program............................ 7-5
H
Hazard Warning Flashers........ 3-5
Head Restraints..................... 1-2
Headlamp
Aiming ............................5-39
Headlamps..........................5-41
Bulb Replacement.............5-41
Daytime Running Lamp.....3-13
Exterior Lamps.................3-11
Flash-to-Pass..................... 3-7
Halogen Bulbs..................5-41
High/Low Beam Changer..... 3-7
On Reminder...................3-13
Heated Seats........................ 1-4
Heater................................3-19
Engine Coolant.................2-19
Highbeam On Light..............3-33Highway Hypnosis................4-30
Hill and Mountain Roads.......4-30
Hood
Checking Things Under....... 5-9
Release............................ 5-9
Horn .................................... 3-5
How to Wear Safety Belts
Properly..........................1-14
Hydraulic Clutch...................5-21
I
Ignition Positions..................2-16
Infants and Young Children,
Restraints........................1-28
Ination - Tire Pressure.........5-51
Instrument Panel
Brightness.......................3-15
Cluster............................3-23
Overview........................... 3-4
INDEX i-5

Maintenance Schedule (cont.)
Introduction....................... 6-1
Maintenance Footnotes....... 6-7
Maintenance Record.........6-16
Maintenance Replacement
Parts...........................6-14
Maintenance
Requirements................. 6-2
Owner Checks and
Services........................ 6-9
Recommended Fluids and
Lubricants....................6-12
Scheduled Maintenance....... 6-4
Using............................... 6-2
Your Vehicle and the
Environment................... 6-2
Malfunction Indicator Lamp....3-30
Manual Lumbar Controls......... 1-4
Manual Seats........................ 1-3
Manual Transmission
Fluid...............................5-20
Operation........................2-22
Message
DIC Warnings and
Messages....................3-37Mirrors
Automatic Dimming
Rearview......................2-33
Outside Convex Mirror.......2-35
Outside Power Mirrors.......2-35
MyGMLink.com...................... 7-3
N
Navigation System, Privacy . . . 7-17
Navigation/Radio System, see
Navigation Manual............3-52
New Vehicle Break-In...........2-15
O
Odometer...........................3-24
Odometer, Trip.....................3-24
Off-Road Driving..................4-13
Off-Road Lamps ..................3-14
Off-Road Recovery...............4-11
Oil
Engine............................5-13
Pressure Light..................3-32
Oil, Engine Oil Life System....5-15
Older Children, Restraints......1-25Online Owner Center.............. 7-3
OnStar, Privacy....................7-17
OnStar
®System, see
OnStar®Manual...............2-39
Operation, Universal Home
Remote System................2-43
Outlet Adjustment.................3-21
Outlets
Accessory Power..............3-18
Outside
Convex Mirror..................2-35
Power Mirrors..................2-35
Owner Checks and Services . . . 6-9
Owners, Canadian.................... ii
P
Paint, Damage.....................5-89
Park
Shifting Into.....................2-29
Shifting Out of..................2-30
Park Aid.............................2-36
Park Brake..........................2-28
INDEX i-7

Restraint System Check
Checking the Restraint
Systems.......................1-60
Replacing Restraint System
Parts After a Crash........1-60
Retained Accessory Power....2-17
Roadside
Service............................. 7-6
Rocking Your Vehicle to
Get it Out ........................4-34
Routing, Engine Drive Belt....6-15
Running the Vehicle While
Parked............................2-32
S
Safety Belt Reminders..........3-24
Safety Belts
Care of ...........................5-85
How to Wear Safety Belts
Properly.......................1-14
Lap-Shoulder Belt.............1-20
Safety Belt Extender.........1-25
Safety Belt Use During
Pregnancy....................1-25
Safety Belts Are for
Everyone.....................1-11Safety Warnings and Symbols.... iii
Scheduled Maintenance.......... 6-4
Seats
60/40 Split
Bench Seat.............1-7, 1-9
Heated Seats..................... 1-4
Manual Lumbar.................. 1-4
Power Lumbar ................... 1-4
Power Seats...................... 1-3
Reclining Seatbacks............ 1-5
Secondary Latch System.......5-76
Securing a Child Restraint
Center Rear Seat
Position.......................1-43
Rear Outside Seat
Position.......................1-41
Right Front Seat Position . . . 1-43
Security Light......................3-33
Service................................ 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.................... 5-4Service (cont.)
Doing Your Own Work........ 5-4
Engine Soon Lamp...........3-30
Publications Ordering
Information...................7-15
Service, Scheduling
Appointments..................... 7-9
Servicing Your
Airbag-Equipped Vehicle....1-58
Setting the Clock.................3-41
Sheet Metal Damage............5-89
Shifting Into Park.................2-29
Shifting Out of Park..............2-30
Side Steps
..........................4-28
Signals, Turn and
Lane-Change..................... 3-6
Spare Tire...........................5-82
Installing..........................5-72
Removing................5-68, 5-69
Storing....................5-78, 5-80
Specications, Capacities......5-96
Speedometer.......................3-24
Split Bench
Seat (60/40)................1-7, 1-9
StabiliTrak
®System............... 4-6
StabiliTrak®/TCS Warning
Light...............................3-29
INDEX i-9