10-12 Vehicle Care
After changing the engine oil, reset
the system:
1. Turn the ignition key to ON/RUNwith the engine off.
2. Press and release the stem in the lower center of the
instrument cluster until the OIL
LIFE message is displayed.
3. Once the alternating “Oil Life”
and “Reset” messages appear,
press and hold the stem until
several beeps sound. This
confirms that the oil life system
has been reset.
4. Turn the key to LOCK/OFF.
If the “Change Oil” message
comes on again and stays on for
30 seconds at the next ignition
cycle, it did not reset. The system
needs to be reset again.What to Do with Used Oil
Used engine oil contains certain
elements that can be unhealthy for
your skin and could even cause
cancer. Do not let used oil stay on
your skin for very long. Clean your
skin and nails with soap and water,
or a good hand cleaner. Wash or
properly dispose of clothing or rags
containing used engine oil. See the
manufacturer's warnings about the
use and disposal of oil products.
Used oil can be a threat to the
environment. If you change your
own oil, be sure to drain all the oil
from the filter before disposal. Never
dispose of oil by putting it in the
trash, pouring it on the ground, into
sewers, or into streams or bodies of
water. Recycle it by taking it to a
place that collects used oil.
Automatic Transmission
Fluid
When to Check and Change
Automatic Transmission Fluid
A good time to check the automatic
transmission fluid level is when the
engine oil is changed.
Change the fluid and filter at the
intervals listed in Scheduled
Maintenance
on page 11‑2, and be
sure to use the transmission fluid
listed in Recommended Fluids and
Lubricants on page 11‑8.
How to Check Automatic
Transmission Fluid
Because this operation can be a
little difficult, you may choose to
have this done at the dealer service
department.
If adding it yourself, be sure to
follow all the instructions here,
or there could be a false reading on
the dipstick.
Vehicle Care 10-15
Notice:Use of the incorrect
automatic transmission fluid
may damage the vehicle, and the
damages may not be covered by
the vehicle's warranty. Always
use the automatic transmission
fluid listed in Recommended
Fluids and Lubricants
on
page 11‑8.
.After adding fluid, recheck the
fluid level as described under
“How to Check Automatic
Transmission Fluid,” earlier in
this section.
.When the correct fluid level is
obtained, push the dipstick back
in all the way; then flip the
handle down to lock the dipstick
in place.
Manual Transmission
Fluid
When to Check
A good time to check the manual
transmission fluid is when the
engine oil is changed. However, the
fluid in the manual transmission
does not require changing.
How to Check
Because this operation can be a
little difficult, you may choose to
have this done at your HUMMER
dealer service department.
If doing it yourself, be sure to follow
all the instructions here, or there
could be a false reading.
Notice: Too much or too
little fluid can damage the
transmission. Too little fluid
could cause the transmission
to overheat. Be sure to get an
accurate reading if checking the
transmission fluid. To check the fluid:
1. Park the vehicle on a level
surface, then shut the engine
off. Let the vehicle sit until the
transmission case is cool
enough to touch.
2. Remove the filler plug.
3. Check that the lubricant level isup to the bottom of the filler
plug hole.
Vehicle Care 10-17
Engine Air Cleaner/Filter
3.7 L shown (5.3 L similar)
The engine air cleaner/filter is
located in the engine compartment
on the passenger side of the
vehicle. See Engine Compartment
Overview
on page 10‑6for more
information on location.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the
Maintenance IIintervals and replace
it at the first oil change after each
80 000 km (50,000 mile) interval.
See Scheduled Maintenance
on
page 11‑2for more information.
If you are driving in dusty/dirty
conditions, inspect the filter at each
engine oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect or replace the engine air
cleaner/filter:
1. Unfasten the clips that hold the cover on and remove the cover.
2. Lift out the engine air cleaner/filter. 3. Inspect or replace the air filter.
See Maintenance Replacement
Parts
on page 11‑10to determine
which filter to use.
4. Reinstall the engine air cleaner/filter cover. Fasten the
clips to hold the cover in place.
{WARNING
Operating the engine with the air
cleaner/filter off can cause you
or others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
Notice: If the air cleaner/filter is
off, dirt can easily get into the
engine, which could damage it.
Always have the air cleaner/filter
in place when you are driving.
11-2 Service and Maintenance
.Are driven off-road in the
recommended manner. See
Off-Road Driving on page 9‑7.
.Use the recommended fuel.
SeeRecommended Fuelon
page 9‑64.
{WARNING
Performing maintenance work can
be dangerous. Some jobs can
cause serious injury. Perform
maintenance work only if you
have the required know-how and
the proper tools and equipment.
If in doubt, see your dealer to
have a qualified technician do
the work. See Doing Your Own
Service Work on page 10‑4.
At your dealer/retailer, you can be
certain that you will receive the
highest level of service available. Your dealer/retailer has specially
trained service technicians, uses
genuine replacement parts, as
well as, up to date tools and
equipment to ensure fast and
accurate diagnostics.
The proper replacement parts,
fluids, and lubricants to use
are listed in
Recommended Fluids
and Lubricantson page 11‑8and
Maintenance Replacement Partson
page 11‑10. We recommend the
use of genuine parts from your
dealer/retailer.
Rotation of New Tires
To maintain ride, handling, and
performance of the vehicle, it is
important that the first rotation
service for new tires be performed
when they have 8 000 to 13 000 km
(5,000 to 8,000 miles). See Tire
Rotation on page 10‑57.
Scheduled
Maintenance
When the Change Oil Message
Displays
Change engine oil and filter. See
Engine Oilon page 10‑9. An
Emission Control Service.
When the “Change Oil” message
displays, service is required for
the vehicle as soon as possible,
within the next 1 000 km/600 miles.
If driving under the best conditions,
the engine oil life system might not
indicate the need for vehicle service
for more than a year. The engine
oil and filter must be changed at
least once a year and the oil life
system must be reset. Your dealer
has trained service technicians who
will perform this work and reset the
system. If the engine oil life system
is reset accidentally, service the
vehicle within 5 000 km/3,000 miles
since the last service. Reset the oil
Service and Maintenance 11-3
life system whenever the oil is
changed. SeeEngine Oil Life
System on page 10‑11.
When the “Change Oil” message
displays, certain services, checks,
and inspections are required.
The services described for
Maintenance Ishould be performed
at every engine oil change. The
services described for Maintenance
II should be performed when:
.Maintenance Iwas performed
the last time the engine oil was
changed.
.It has been 10 months or more
since the “Change Oil” message
has displayed or since the last
service.
Maintenance I
.Change engine oil and filter.
SeeEngine Oilon page 10‑9.
An Emission Control Service.
.Engine coolant level check. See
Engine Coolant on page 10‑19.
.Windshield washer fluid level
check. See Washer Fluidon
page 10‑25.
.Tire inflation check. See Tire
Pressure on page 10‑51.
.Tire wear inspection. See Tire
Inspection on page 10‑57.
.Rotate tires. See Tire Rotationon page 10‑57.
.Fluids visual leak check
(or every 12 months, whichever
occurs first). A leak in any
system must be repaired and
the fluid level checked.
.Engine air cleaner filter
inspection (vehicles driven in
dusty conditions only). See
Engine Air Cleaner/Filter
on
page 10‑17.
.Brake system inspection
(or every 12 months, whichever
occurs first).
Maintenance II
.Perform all services described in
MaintenanceI.
.Steering and suspension
inspection. Visual inspection for
damaged, loose, or missing
parts or signs of wear.
.Lubricate the front suspension,
steering linkage, and parking
brake cable guides. Control arm
ball joints require lubrication but
should not be lubricated unless
their temperature is −12°C
(10°F) or higher, or they could
be damaged.
.Engine cooling system
inspection. Visual inspection
of hoses, pipes, fittings, and
clamps and replacement,
if needed.
Service and Maintenance 11-5
.Exhaust system and nearby heat
shields inspection for loose or
damaged components.
.Accelerator pedal check for
damage, high effort, or binding.
Replace if needed.
First Engine Oil Change After
Every 40 000 km/25,000 Miles
.Fuel system inspection for
damage or leaks.
First Engine Oil Change After
Every 80 000 km/50,000 Miles
.Engine air cleaner filter
replacement. See Engine Air
Cleaner/Filter on page 10‑17.
.Automatic transmission fluid
change (severe service) for
vehicles mainly driven in heavy
city traffic in hot weather, in
hilly or mountainous terrain,
when frequently towing a
trailer, or used for taxi, police,
or delivery service. See
Automatic Transmission Fluid
on
page 10‑12.
.Four‐wheel drive only: Transfer
case fluid change. Check vent
hose at transfer case for kinks
and proper installation. Check
to be sure vent hose is
unobstructed, clear, and free of
debris. During any maintenance,
if a power washer is used to
clean mud and dirt from the
underbody, care should be taken
to not directly spray the transfer
case output seals. High pressure
water can overcome the seals
and contaminate the transfer
case fluid. Contaminated fluid
will decrease the life of the
transfer case and should be
replaced.
First Engine Oil Change After
Every 160 000 km/100,000 Miles
.Automatic transmission fluid
change (normal service).
See Automatic Transmission
Fluid on page 10‑12.
.Rear axle fluid change (normal
service). See Rear Axleon
page 10‑29.
.Spark plug replacement and
spark plug wires inspection.
An Emission Control Service.
First Engine Oil Change After
Every 240 000 km/150,000 Miles
.Engine cooling system drain,
flush, and refill, cooling system
and cap pressure check, and
cleaning of outside of radiator
and air conditioning condenser
(or every 5 years, whichever
occurs first). See Cooling
System
on page 10‑18. An
Emission Control Service.
.Engine accessory drive belt
inspection for fraying, excessive
cracks, or obvious damage
and replacement, if needed.
An Emission Control Service.
11-6 Service and Maintenance
ServiceMaintenanceIMaintenance
II
Change engine oil and filter. Reset oil life system. ••
Engine coolant level check. ••
Windshield washer fluid level check. ••
Tire inflation pressures check. ••
Tire wear inspection. ••
Rotate tires. ••
Fluids visual leak check. ••
Engine air cleaner filter inspection (vehicles driven in dusty conditions only). ••
Brake system inspection. ••
Body components lubrication. •
Steering and suspension inspection. •
i-6 INDEX
I
Ignition Positions . . . . . . . . . . . . . . 9-34
Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 10-31
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-10
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-44
Instrument Cluster . . . . . . . . . . . . . . 5-7
Introduction . . . . . . . . . . . . . . . . . . .iii, 7-1
J
Jump Starting . . . . . . . . . . . . . . . . . 10-86
K
Keyless Entry Remote (RKE) System . . . . . . . . 2-3
Keyless Entry System . . . . . . . . . . 2-2
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
L
Labeling, Tire Sidewall . . . . . . . . 10-44
Lamp Messages . . . . . . . . . . . . . . . 5-24
Lamps Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-3
License Plate . . . . . . . . . . . . . . . 10-37
Malfunction Indicator . . . . . . . . . 5-12
Off-Road . . . . . . . . . . . . . . . . . . . . . . 6-6
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-8
Lap-Shoulder Belt . . . . . . . . . . . . . 3-20
LATCH System Replacing Parts After a
Crash . . . . . . . . . . . . . . . . . . . . . . . 3-59
Latch, Lower Anchors and Tethers for Children . . . . . . . . . . 3-51
Lighter, Cigarette . . . . . . . . . . . . . . . 5-5
Lighting
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Illumination Control . . . . . . . . . . . . 6-7 Lights
Airbag Readiness . . . . . . . . . . . . . 5-10
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 5-15
Charging System . . . . . . . . . . . . . 5-11
Cruise Control . . . . . . . . . . . . . . . . 5-18
Engine Oil Pressure . . . . . . . . . . 5-17
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
High-Beam On . . . . . . . . . . . . . . . . 5-17
High/Low Beam Changer . . . . . . 6-3
Safety Belt Reminders . . . . . . . . . 5-9
Security . . . . . . . . . . . . . . . . . . . . . . 5-17
Tire Pressure . . . . . . . . . . . . . . . . . 5-16
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 5-16
Up-Shift . . . . . . . . . . . . . . . . . . . . . . 5-15
Locking Front Axle . . . . . . . . . . . . . 9-55
Locking Rear Axle . . . . . . . . . . . . . 9-54
Locks Automatic Door . . . . . . . . . . . . . . . . 2-6
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Lockout Protection . . . . . . . . . . . . . 2-6
Power Door . . . . . . . . . . . . . . . . . . . . 2-5
Safety . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Loss of Control . . . . . . . . . . . . . . . . . 9-6