2007 HUMMER H2 power steering

Power Steering Fluid
SeeEngine
Compartment Overview
on page 402for
reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power
steering uid unless you suspect there is a leak in
the system or you hear an unusual noise.
A uid loss in this system could indicate a problem.
Have the system inspected and repaired.
How to Check Power Steering Fluid
To check the power steering uid, do the following:
1. Turn the key off and let the engine
compartment cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a
clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the
uid level on the dipstick.
The level should be at the FULL COLD mark.
If necessary, add only enough uid to bring
the level up to the mark.
What to Use
To determine what kind of uid to use, see
Recommended Fluids and Lubricants on page 528.
Always use the proper uid. Failure to use the
proper uid can cause leaks and damage hoses
and seals.
425

Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples
of optional accessories are, automatic
transmission/transaxle, power steering, power
brakes, power windows, power seats, and
air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is located
between the plies and the tread. Cords may be
made from steel or other reinforcing materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.Cold Tire Pressure:The amount of air pressure
in a tire, measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire has built up
heat from driving. SeeInation - Tire Pressure
on page 456.
Curb Weight:This means the weight of a motor
vehicle with standard and optional equipment
including the maximum capacity of fuel, oil, and
coolant, but without passengers and cargo.
DOT Markings:A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identication Number (TIN),
an alphanumeric designator which can also identify
the tire manufacturer, production plant, brand,
and date of production.
GVWR:Gross Vehicle Weight Rating.
SeeLoading Your Vehicle on page 362.
GAWR FRT:Gross Axle Weight Rating for the
front axle. SeeLoading Your Vehicle on page 362.
GAWR RR:Gross Axle Weight Rating for the
rear axle. SeeLoading Your Vehicle on page 362.
453

Fuses Usage
LT TRNLeft Turn Signals and
Sidemarkers
VEH STOPVehicle Stoplamps, Brake
Module, Electronic Throttle
Control Module
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
RT TRNRight Turn Signals and
Sidemarkers
BODY Harness Connector
DDM Driver Door Module
LOCKSRear Doors and Liftgate
Power Lock Relay Feed
ECC Liftgate
TBC 2C Truck Body Controller
FLASH Flasher Module
CB LT DOORSLeft Rear Power Window
Circuit Breaker and Driver
Door Module
TBC 2B Truck Body Controller
TBC 2A Truck Body Controller
Circuit Breaker Usage
AUX PWR 2 Midgate Controller (SUT Only)
Center Instrument Panel Fuse Block
The center instrument panel utility block is
located underneath the instrument panel, to the
left of the steering column.
Device Usage
SEO Special Equipment Option
TRAILERTrailer Brake Wiring,
Off-Road Lamps Harness
Connector
UPFIT Uptter (Not Used)
SL RIDE Ride Control (Not Used)
HDLR 2Headliner Wiring
Connector 2
506

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
Engine cooling system service (or every
ve years, whichever occurs rst).
An Emission Control Service.
See footnote (i).•
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (k).•
Maintenance Footnotes
#Lubricate the front suspension, steering linkage,
transmission shift linkage, and parking brake
cable guides. Control arm ball joints require
lubrication but should not be lubricated unless
their temperature is 10°F (-12°C) or higher, or
they could be damaged.
(a)Visually inspect brake lines and hoses for
proper hook-up, binding, leaks, cracks, chang,
etc. Inspect disc brake pads for wear and rotors for
surface condition. Inspect other brake parts,
including calipers, parking brake, etc.(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing
parts, signs of wear or lack of lubrication. Inspect
power steering lines and hoses for proper
hook-up, binding, leaks, cracks, chang, etc.
Visually check constant velocity joints, rubber
boots and axle seals for leaks.
(c)Visually inspect hoses and have them replaced
if they are cracked, swollen, or deteriorated.
Inspect all pipes, ttings, and clamps; replace with
genuine GM parts as needed. To help ensure
proper operation, a pressure test of the cooling
system and pressure cap and cleaning the outside
of the radiator and air conditioning condenser is
recommended at least once a year.
521

Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name,
part number, or specication can be obtained
from your dealer.
Usage Fluid/Lubricant
Engine OilEngine oil which meets GM
Standard GM6094M and displays
the American Petroleum Institute
Certied for Gasoline Engines
starburst symbol. GM Goodwrench
®
oil meets all the requirements for
your vehicle. To determine the
proper viscosity for your vehicle’s
engine, seeEngine Oil on page 404.
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 415.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Usage Fluid/Lubricant
Windshield
WasherGM Optikleen
®Washer Solvent.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184,
in Canada 89021186).
Automatic
TransmissionDEXRON
®-VI Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241,
in Canada 10953474).
Chassis
LubricationChassis Lubricant
(GM Part No. U.S. 12377985,
in Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Front and
Rear AxleSAE 75W-90 Synthetic
Axle Lubricant
(GM Part No. U.S. 12378261,
in Canada 10953455) meeting
GM Specication 9986115.
Transfer CaseManual Transmission Fluid
(GM Part No. U.S. 88861800,
in Canada 88861801).
528

Electrical System (cont.)
Underhood Fuse Block............................. 507
Windshield Wiper Fuses........................... 503
Electronically Controlled Air Suspension
System.................................................... 372
Engine
Air Cleaner/Filter...................................... 409
Battery..................................................... 431
Check and Service Engine Soon Light........ 215
Coolant.................................................... 415
Coolant Heater......................................... 123
Coolant Temperature Gage...................... 213
Drive Belt Routing.................................... 531
Engine Compartment Overview................ 402
Exhaust................................................... 137
Oil ........................................................... 404
Oil Life System........................................ 407
Overheated Protection Operating Mode...... 420
Overheating............................................. 418
Starting.................................................... 121
Entry/Exit Lighting....................................... 191
Event Data Recorders (EDR)...................... 546
Extender, Safety Belt..................................... 45
Exterior Lamps............................................ 186F
Filter
Engine Air Cleaner................................... 409
Finish Damage............................................ 499
First Aid Kit................................................. 360
Fixed Mast Antenna.................................... 300
Flashers, Hazard Warning........................... 176
Flash-to-Pass.............................................. 180
Flat Tire...................................................... 468
Flat Tire, Changing...................................... 468
Flat Tire, Storing.................................485, 488
Fluid
Automatic Transmission............................ 412
Power Steering........................................ 425
Windshield Washer.................................. 426
Four-Wheel Drive........................................ 438
Four-Wheel Drive, Full-Time........................ 128
Front Axle................................................... 440
Front Mounted Receiver.............................. 360
Fuel............................................................ 394
Additives.................................................. 395
California Fuel.......................................... 395
Filling a Portable Fuel Container.............. 399
560

P
Paint, Damage............................................ 499
Park Aid...................................................... 192
Park (P)
Shifting Into............................................. 134
Shifting Out of......................................... 135
Parking
Brake....................................................... 133
Over Things That Burn............................ 136
Passing....................................................... 314
Passlock
®.................................................... 118
Power
Accessory Outlet(s).................................. 196
Door Locks.............................................. 101
Electrical System..................................... 503
Lumbar Controls.......................................... 9
Reclining Seatbacks................................... 12
Retained Accessory (RAP)....................... 121
Seat............................................................ 8
Steering Fluid.......................................... 425
Windows.................................................. 112
Power Winch Platform................................. 361
Programmable Automatic Door Locks.......... 102
Q
Questions and Answers About
Safety Belts............................................... 28
R
Radios........................................................ 241
Care of Your Cassette Tape Player.......... 297
Care of Your CD and DVD Player............ 300
Care of Your CDs and DVDs................... 299
Navigation/Radio System,
see Navigation Manual......................... 271
Radio with Cassette and CD.................... 243
Radio with Six-Disc CD............................ 256
Rear Seat Audio...................................... 294
Setting the Time...................................... 243
Theft-Deterrent......................................... 295
Understanding Reception......................... 297
Reading Lamps........................................... 192
Rear Axle.................................................... 437
Locking.................................................... 311
Rear Door Security Locks........................... 102
Rear Heated Seats....................................... 15
565