2007 HUMMER H3 fuel pressure

(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.
(d)Visually inspect wiper blades for wear or
cracking. Replace wiper blades that appear worn
or damaged or that streak or miss areas of
the windshield.
(e)Make sure the safety belt reminder light and all
your belts, buckles, latch plates, retractors, and
anchorages 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 look
for any opened or broken airbag coverings, and
have them repaired or replaced. The airbag system
does not need regular maintenance.(f)Lubricate all key lock cylinders, hood latch
assembly, secondary latch, pivots, spring anchor,
release pawl, rear compartment hinges, outer
swing-gate handle pivot points, rear door detent
link, roller mechanism, swing-gate 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 uid and lter
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.
434

At Each Fuel Fill
It is important to perform these underhood checks
at each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 323for
further details.
Notice:It is important to check your oil
regularly and keep it at the proper level.
Failure to keep your engine oil at the proper
level can cause damage to your engine
not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. See
Engine Coolant on page 335for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in
the windshield washer uid reservoir 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. See
Ination - Tire Pressure on page 375. Check to
make sure the spare tire is stored securely.
SeeChanging a Flat Tire on page 391.
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. See
Tire Inspection and Rotation on page 381.
436

Light (cont.)
Security................................................... 190
StabiliTrak
®Not Ready............................. 184
Tire Pressure........................................... 185
Traction Off.............................................. 184
Up-Shift................................................... 181
Lighting
Exit.......................................................... 168
Loading Your Vehicle................................... 289
Locking Rear Axle....................................... 243
Lockout Protection......................................... 94
Locks
Door.......................................................... 92
Lockout Protection..................................... 94
Power Door............................................... 93
Programmable Automatic Door Locks......... 94
Loss of Control........................................... 249
Luggage Carrier.......................................... 144
Lumbar
Power Controls............................................ 9
M
Maintenance Schedule
Additional Required Services.................... 432
At Each Fuel Fill...................................... 436
At Least Once a Month............................ 436
At Least Once a Year.............................. 437Maintenance Schedule (cont.)
Introduction.............................................. 426
Maintenance Footnotes............................ 433
Maintenance Record................................ 444
Maintenance Requirements...................... 426
Normal Maintenance Replacement Parts.... 442
Owner Checks and Services.................... 435
Recommended Fluids and Lubricants....... 440
Scheduled Maintenance........................... 429
Using....................................................... 427
Your Vehicle and the Environment............ 427
Malfunction Indicator Light........................... 186
Manual Seats.................................................. 8
Manual Transmission
Fluid........................................................ 332
Operation................................................. 109
Message
DIC Warnings and Messages................... 196
Mirrors
Automatic Dimming Rearview with
Compass and Temperature Display....... 125
Automatic Dimming Rearview
with OnStar
®, Compass and
Temperature Display............................. 122
Outside Convex Mirror............................. 128
Outside Power Mirrors............................. 128
474