check engine HUMMER H3 2006 Service Manual

Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-24for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-53for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-73.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-64.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-27.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
6-9

3. On automatic transmission vehicles, try to start the
engine in each gear. The vehicle should start only
in PARK (P) or NEUTRAL (N). If the vehicle
starts in any other position, contact your
GM Goodwrench
®dealer for service.
On manual transmission vehicles, put the shift lever
in NEUTRAL (N), push the clutch down halfway,
and try to start the engine. The vehicle should start
only when the clutch is pushed down all the way
to the oor. If the vehicle starts when the clutch
is not pushed all the way down, contact your
GM Goodwrench
®dealer for service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.2. Firmly apply the parking brake. SeeParking Brake
on page 2-27.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the ignition to ON, but do
not start the engine. Without applying the regular
brake, try to move the shift lever out of PARK (P)
with normal effort. If the shift lever moves out
of PARK (P), contact your GM Goodwrench
®dealer
for service.
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK in each shift lever position.
With an automatic transmission, the ignition should
turn to LOCK only when the shift lever is in
PARK (P). The key should come out only in LOCK.
With a manual transmission, the key should
come out only in LOCK.
Contact your GM Goodwrench
®dealer if service is
required.
6-10

Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability: With the
engine running and transmission in NEUTRAL (N),
slowly remove foot pressure from the regular brake
pedal. Do this until the vehicle is held by the parking
brake only.
To check the PARK (P) mechanism’s holding
ability: With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Contact your GM Goodwrench
®dealer if service is
required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-11

Care of
Safety Belts................................................5-88
Your CD Player...........................................3-77
Your CDs ...................................................3-77
Cargo Cover..................................................2-45
Cargo Tie Downs............................................2-45
Chains, Tire...................................................5-71
Check
Engine Light...............................................3-35
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-93
Child Restraints
Child Restraint Systems...............................1-34
Infants and Young Children...........................1-31
Lower Anchors and Tethers for Children..........1-38
Older Children.............................................1-28
Securing a Child Restraint in a Rear
Seat Position...........................................1-43
Securing a Child Restraint in the Right
Front Seat Position...................................1-45
Where to Put the Restraint...........................1-37
Cigarette Lighter.............................................3-20
Cleaning
Aluminum Wheels........................................5-91
Exterior Lamps/Lenses.................................5-89Cleaning (cont.)
Fabric/Carpet..............................................5-87
Finish Care.................................................5-89
Inside of Your Vehicle..................................5-85
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-88
Leather......................................................5-87
Tires..........................................................5-91
Underbody Maintenance...............................5-92
Washing Your Vehicle...................................5-89
Weatherstrips..............................................5-88
Windshield, Backglass, and Wiper Blades.......5-90
Climate Control System...................................3-21
Outlet Adjustment........................................3-23
Clutch, Hydraulic.............................................5-23
Comfort Guides, Rear Safety Belt.....................1-25
Content Theft-Deterrent....................................2-12
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-45
Coolant
Engine Temperature Gage............................3-34
Heater, Engine............................................2-17
Cooling System..............................................5-29
Cruise Control................................................3-11
Cruise Control Light........................................3-39
3

Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-39
Check and Service Engine Soon Light............3-35
Coolant......................................................5-24
Coolant Heater............................................2-17
Coolant Temperature Gage...........................3-34
Engine Compartment Overview......................5-12
Exhaust.....................................................2-31
Fan Noise..................................................5-33
Oil .............................................................5-13
Oil Life System...........................................5-16
Overheating................................................5-27
Starting......................................................2-16
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-19
Extender, Safety Belt.......................................1-27
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-18
Finish Damage...............................................5-92
Fixed Mast Antenna........................................3-77Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-72
Flat Tire, Changing.........................................5-73
Flat Tire, Storing.............................................5-82
Fluid
Automatic Transmission................................5-19
Manual Transmission....................................5-22
Power Steering...........................................5-34
Windshield Washer......................................5-35
Fog Lamps....................................................3-18
Front Armrest Storage Area..............................2-43
Front Axle......................................................5-45
Front Seat Storage Net....................................2-42
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-40
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Fuses
Engine Compartment Fuse Block...................5-97
Fuses and Circuit Breakers...........................5-96
Windshield Wiper.........................................5-95
5

G
Gage
Engine Coolant Temperature.........................3-34
Fuel..........................................................3-40
Speedometer..............................................3-26
Tachometer.................................................3-26
Garage Door Opener.......................................2-38
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-42
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamp
Aiming.......................................................5-46
Headlamps....................................................5-49
Automatic Headlamp System.........................3-16
Bulb Replacement.......................................5-49
Daytime Running Lamps...............................3-16
Flash-to-Pass............................................... 3-9
Halogen Bulbs............................................5-49Headlamps (cont.)
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-15
Heated Seats................................................... 1-4
Heater...........................................................3-21
Highbeam On Light.........................................3-39
Highway Hypnosis...........................................4-43
Hill and Mountain Roads..................................4-43
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-14
Hydraulic Clutch.............................................5-23I
Ignition Positions.............................................2-15
Infants and Young Children, Restraints...............1-31
Ination -- Tire Pressure..................................5-60
Instrument Panel
Overview..................................................... 3-4
Instrument Panel (I/P)
Brightness..................................................3-18
Cluster.......................................................3-25
6

M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-8
At Least Once a Month.................................. 6-9
At Least Once a Year.................................... 6-9
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-14
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-13
Owner Checks and Services........................... 6-8
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-35
Manual Seats................................................... 1-2
Manual Transmission
Fluid..........................................................5-22
Operation...................................................2-21
Message
DIC Warnings and Messages........................3-44Mirrors
Automatic Dimming Rearview with Compass
and Temperature Display...........................2-33
Outside Convex Mirror.................................2-36
Outside Power Mirrors..................................2-35
MyGMLink.com................................................ 7-3
N
Navigation/Radio System, see
Navigation Manual.......................................3-76
New Vehicle Break-In......................................2-14
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-26
Odometer, Trip...............................................3-26
Off-Road Driving.............................................4-17
Off-Road Lamps.............................................3-17
Off-Road Recovery..........................................4-14
Oil
Engine.......................................................5-13
Pressure Light.............................................3-38
8

Oil, Engine Oil Life System..............................5-16
Older Children, Restraints................................1-28
Online Owner Center........................................ 7-3
OnStar
®System, see OnStar®Manual...............2-36
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-23
Outside
Convex Mirror.............................................2-36
Power Mirrors.............................................2-35
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Park (P)
Shifting Into................................................2-28
Shifting Out of............................................2-30
Parking
Brake........................................................2-27
Over Things That Burn.................................2-31
Parking Your Vehicle.......................................2-30
Passenger Airbag Status Indicator.....................3-29
Passenger Sensing System..............................1-59
Passing.........................................................4-14Passlock
®......................................................2-14
Power
Accessory Outlet(s)......................................3-19
Door Locks.................................................. 2-8
Electrical System.........................................5-96
Lumbar Controls........................................... 1-3
Retained Accessory (RAP)............................2-16
Six-Way Seats.............................................. 1-3
Steering Fluid.............................................5-34
Windows....................................................2-11
Pretensioners, Safety Belt................................1-27
Programmable Automatic Door Locks.................. 2-8
Q
Questions and Answers About Safety Belts.........1-14
R
Radiator Pressure Cap....................................5-27
Radios..........................................................3-48
Care of Your CD Player...............................3-77
Care of Your CDs........................................3-77
9

Radios (cont.)
Navigation/Radio System, see Navigation
Manual...................................................3-76
Radio with CD............................................3-49
Radio with Six-Disc CD................................3-63
Setting the Time..........................................3-49
Theft-Deterrent............................................3-76
Understanding Reception..............................3-76
Reading Lamps..............................................3-19
Rear Axle......................................................5-45
Locking......................................................4-10
Rear Safety Belt Comfort Guides......................1-25
Rear Seat Passengers, Safety Belts..................1-22
Rear Storage Area..........................................2-45
Rear Windshield Washer/Wiper.........................3-10
Rearview Mirror, Automatic Dimming with
Compass and Temperature Display................2-33
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-12
Recovery Loops..............................................4-51
Recreational Vehicle Towing.............................4-57
Remote Keyless Entry System............................ 2-4
Remote Keyless Entry System, Operation............ 2-5
Removing the Flat Tire and Installing the
Spare Tire..................................................5-77Removing the Spare Tire and Tools...................5-75
Replacement Bulbs.........................................5-51
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking the Restraint Systems....................1-65
Replacing Restraint System Parts
After a Crash..........................................1-66
Retained Accessory Power (RAP)......................2-16
Right Front Passenger Position, Safety Belts......1-22
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-50
Running the Engine While Parked.....................2-32
S
Safety Belt
Passenger Reminder Light............................3-27
Pretensioners..............................................1-27
Reminder Light............................................3-27
10