fuel pressure GMC YUKON DENALI 2007 User Guide

(g)Inspect system. Check all fuel and vapor
lines and hoses for proper hook-up, routing, and
condition. Check that the purge valve works
properly, if equipped. Replace as needed.
(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.
(i)Drain, ush, and rell cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 445 for what to use. Inspect
hoses. Clean radiator, condenser, pressure
cap, and ller neck. Pressure test the cooling
system and pressure cap.(j)A uid loss in any vehicle system could indicate
a problem. Have the system inspected and
repaired and the uid level checked. Add uid if
needed.
(k)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(l)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
(m)Check vent hose at transfer case for kinks
and proper installation.
Owner Checks and Services
These owner checks and services should be
performed at the intervals specied to help
ensure the safety, dependability, and emission
control performance of your vehicle. Your
GM Goodwrench
®dealer can assist you with
these checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 561.
557

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 432for
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 445for 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. SeeTires on
page 480for further details. Check to make
sure the spare tire is stored securely. See
Changing a Flat Tire on page 506.
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 496.
558

Fuel (cont.)
Gasoline Specications............................ 424
Low Warning Light................................... 244
Fuses
Center Instrument Panel Fuse Block........ 540
Fuses and Circuit Breakers...................... 538
Instrument Panel Fuse Block................... 538
Underhood Fuse Block............................. 541
Windshield Wiper..................................... 537
G
Gage
Engine Coolant Temperature.................... 236
Fuel......................................................... 243
Oil Pressure............................................. 240
Speedometer........................................... 227
Tachometer.............................................. 227
Voltmeter Gage........................................ 232
Garage Door Opener..........................166, 167
Gasoline
Octane..................................................... 423
Specications........................................... 424
Glove Box................................................... 178
GM Mobility Reimbursement Program.......... 575
H
Hazard Warning Flashers............................ 192
Head Restraints............................................ 16
Headlamp
Aiming..................................................... 473
Headlamps
Automatic Headlamp System.................... 205
Bulb Replacement.................................... 476
Daytime Running Lamps.......................... 205
Flash-to-Pass........................................... 195
Halogen Bulbs......................................... 476
High/Low Beam Changer......................... 195
On Reminder........................................... 205
Heated Seats................................................ 11
Heater......................................................... 214
Highbeam On Light..................................... 242
High-Speed Operation, Tires........................ 490
Highway Hypnosis....................................... 383
Hill and Mountain Roads............................. 384
Hood
Checking Things Under............................ 428
Release................................................... 429
Horn............................................................ 192
How to Use This Manual................................ 3
How to Wear Safety Belts Properly............... 43
599

I
Ignition Positions......................................... 140
Infants and Young Children, Restraints.......... 64
Ination - Tire Pressure............................... 488
Instrument Panel
Overview.................................................. 190
Storage Area............................................ 178
Instrument Panel (I/P)
Brightness................................................ 207
Cluster..................................................... 226
J
Jump Starting.............................................. 464
K
Keyless Entry System................................. 114
Keys........................................................... 113
L
Labeling, Tire Sidewall................................. 482
Lamps
Battery Run-Down Protection................... 208
Dome....................................................... 207Lamps (cont.)
Dome Lamp Override............................... 207
Exterior.................................................... 203
Fog .......................................................... 206
Front Reading.......................................... 208
LATCH System
Child Restraints......................................... 74
Level Control............................................... 399
License Plate Lamps................................... 477
Liftgate, Power............................................ 128
Liftgate/Liftglass........................................... 126
Liftglass/Liftgate........................................... 126
Light
Airbag Readiness..................................... 229
Anti-Lock Brake System Warning............. 234
Brake System Warning............................. 233
Charging System..................................... 232
Cruise Control.......................................... 242
Fog Lamp................................................ 242
Highbeam On.......................................... 242
Low Fuel Warning.................................... 244
Malfunction Indicator................................ 237
Oil Pressure............................................. 241
Passenger Airbag Status Indicator............ 230
Passenger Safety Belt Reminder.............. 228
Safety Belt Reminder............................... 228
Security................................................... 241
600

Light (cont.)
StabiliTrak®Indicator................................ 235
Tire Pressure........................................... 236
Tow/Haul Mode........................................ 242
Lighting
Entry........................................................ 207
Exit.......................................................... 207
Loading Your Vehicle................................... 392
Locking Differential...................................... 349
Lockout Protection....................................... 125
Locks
Delayed Locking...................................... 123
Door........................................................ 122
Lockout Protection................................... 125
Power Door............................................. 123
Programmable Automatic Door Locks....... 124
Rear Door Security Locks........................ 124
Loss of Control........................................... 357
Low Fuel Warning Light............................... 244
Luggage Carrier.......................................... 179
Lumbar
Power Controls.......................................... 10M
Maintenance Schedule
Additional Required Services.................... 554
At Each Fuel Fill...................................... 558
At Least Once a Month............................ 558
At Least Once a Year.............................. 559
Introduction.............................................. 548
Maintenance Footnotes............................ 555
Maintenance Record................................ 565
Maintenance Requirements...................... 548
Normal Maintenance Replacement Parts ... 563
Owner Checks and Services.................... 557
Recommended Fluids and Lubricants....... 561
Scheduled Maintenance........................... 551
Using....................................................... 549
Your Vehicle and the Environment............ 549
Malfunction Indicator Light........................... 237
Memory Seat, Mirrors, and Pedals................ 12
Message
DIC Warnings and Messages................... 252
Mirrors
Automatic Dimming Rearview with
OnStar
®, Compass and Temperature
Display................................................. 158
Outside Power Foldaway Mirrors.............. 161
MyGMLink.com............................................ 573
601