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2008 GMC Yukon Owner's Manual - Page 402

2008 GMC Yukon Manual

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Cooling System If your vehicle is a Two-mode Hybrid, see the Two-mode Hybrid manual for more information. When you decide it is safe to lift the hood, here is what you will see: {CAUTION: An electric fan under the hood can start up and injure you even when the engine is not running. Keep hands, clothing, and tools away from any underhood electric fan. If the coolant inside the coolant surge tank is boiling, do not do anything else until it cools down. If possible, the vehicle should be parked on a level surface. Check the coolant level after the system cools down. Some amount of coolant may be lost due to overheating. 5.3L Engine (4.8L and 6.0L Similar) A. Coolant Surge Tank B. Coolant Surge Tank Pressure Cap C. Engine Cooling Fan(s) 5-34

Section	Page
2008 GMC Yukon, Yukon XL BookTOC	1
Seats and Restraint Systems	5
Front Seats	6
Manual Seats	6
Power Seats	7
Manual Lumbar	8
Power Lumbar	8
Heated Seats	9
Memory Seat, Mirrors, and Pedals	10
Reclining Seatbacks	12
Head Restraints	14
Center Seat	15
Rear Seats	15
Heated Seats	15
	60
Child Restraint Systems	61
Where to Put the Restraint	64
Lower Anchors and Tethers for Children (LATCH)	65
Securing a Child Restraint in a Rear Seat Position	73
Securing a Child Restraint in the Center Front Seat Position	75
Securing a Child Restraint in the Right Front Seat Position	76
Airbag System	80
Where Are the Airbags?	82
When Should an Airbag Inflate?	85
What Makes an Airbag Inflate?	87
How Does an Airbag Restrain?	87
What Will You See After an Airbag Inflates?	88
Passenger Sensing System	89
Servicing Your Airbag-Equipped Vehicle	94
Adding Equipment to Your Airbag-Equipped Vehicle	94
Restraint System Check	96
Checking the Restraint Systems	96
Replacing Restraint System Parts After a Crash	97
Features and Controls	99
Keys	101
Remote Keyless Entry (RKE) System	102
Remote Keyless Entry (RKE) System Operation	103
Remote Vehicle Start	106
Doors and Locks	108
Door Locks	108
Power Door Locks	109
Delayed Locking	109
Programmable Automatic Door Locks	109
Rear Door Security Locks	110
Lockout Protection	110
Liftgate/Liftglass	111
Power Liftgate	113
Power Running Boards	116
Windows	117
Power Windows	118
Sun Visors	119
Theft-Deterrent Systems	120
Content Theft-Deterrent	120
PASS-Key® III+	122
PASS-Key® III+ Operation	122
Starting and Operating Your Vehicle	124
New Vehicle Break-In	124
Ignition Positions	124
Retained Accessory Power (RAP)	125
Starting the Engine	126
Adjustable Throttle and Brake Pedal	127
Engine Coolant Heater	128
Active Fuel Management™	129
Automatic Transmission Operation	129
Tow/Haul Mode	135
Four-Wheel Drive	136
Parking Brake	141
Shifting Into PARK (P)	142
Shifting Out of PARK (P)	144
Parking Over Things That Burn	144
Engine Exhaust	145
Running the Engine While Parked	146
Mirrors	147
Automatic Dimming Rearview Mirror with OnStar®, Compass and Temperature Display	147
Automatic Dimming Rearview Mirror with Compass and Temperature Display	150
Outside Manual Mirrors	152
Outside Trailer-Tow Mirrors	152
Outside Power Mirrors	153
Outside Power Foldaway Mirrors	154
Outside Automatic Dimming Mirror	155
Park Tilt Mirrors	155
Outside Convex Mirror	155
Outside Heated Mirrors	155
Object Detection Systems	156
Ultrasonic Rear Parking Assist (URPA)	156
OnStar® System	158
Universal Home Remote System	162
Universal Home Remote System	162
Universal Home Remote System Operation (With Three Round LED)	162
Storage Areas	169
Glove Box	169
Cupholder(s)	169
Center Console Storage	169
Luggage Carrier	170
Rear Storage Area	171
Rear Seat Armrest	171
Cargo Cover	171
Sunroof	172
Instrument Panel	175
Instrument Panel Overview	178
Hazard Warning Flashers	180
Other Warning Devices	180
Horn	180
Tilt Wheel	180
Turn Signal/Multifunction Lever	181
Turn and Lane-Change Signals	182
Headlamp High/Low-Beam Changer	183
Flash-to-Pass	183
Windshield Wipers	183
Rainsense™ II Wipers	184
Windshield Washer	185
Rear Window Wiper/Washer	186
Cruise Control	187
Exterior Lamps	190
Headlamps on Reminder	191
Daytime Running Lamps (DRL)	191
Automatic Headlamp System	192
Fog Lamps	193
Auxiliary Roof Mounted Lamp	193
Instrument Panel Brightness	194
Dome Lamps	194
Dome Lamp Override	194
Entry Lighting	194
Exit Lighting	194
Reading Lamps	195
Electric Power Management	195
Battery Run-Down Protection	196
Accessory Power Outlet(s)	196
Ashtray(s) and Cigarette Lighter	197
Climate Controls	197
Climate Control System	197
Dual Automatic Climate Control System	200
Outlet Adjustment	207
Rear Air Conditioning and Heating System	207
Rear Air Conditioning and Heating System and Electronic Climate Controls	209
Warning Lights, Gages, and Indicators	211
Instrument Panel Cluster	212
Speedometer and Odometer	213
Trip Odometer	213
Tachometer	213
Safety Belt Reminders	213
Airbag Readiness Light	214
Passenger Airbag Status Indicator	215
Charging System Light	217
Voltmeter Gage	218
Brake System Warning Light	218
Antilock Brake System Warning Light	220
StabiliTrak® Indicator Light	220
Engine Coolant Temperature Gage	221
Tire Pressure Light	221
Malfunction Indicator Lamp	222
Oil Pressure Gage	225
Oil Pressure Light	226
Security Light	226
Fog Lamp Light	227
Cruise Control Light	227
Highbeam On Light	227
Tow/Haul Mode Light	227
Fuel Gage	228
Low Fuel Warning Light	229
Driver Information Center (DIC)	229
DIC Operation and Displays (With DIC Buttons)	230
DIC Operation and Displays (Without DIC Buttons)	235
DIC Warnings and Messages	238
DIC Vehicle Customization (With DIC Buttons)	246
Audio System(s)	255
Setting the Clock	256
Radio(s) (MP3)	258
Using an MP3 (Radio with CD or Six-Disc CD Player)	277
Using an MP3 (Radio with CD and DVD Player)	282
XM Radio Messages	287
Navigation/Radio System	288
Rear Seat Entertainment (RSE) System	289
Rear Seat Audio (RSA)	299
Theft-Deterrent Feature	301
Audio Steering Wheel Controls	302
Radio Reception	303
Rear Side Window Antenna	304
XM™ Satellite Radio Antenna System	304
Driving Your Vehicle	305
Your Driving, the Road, and Your Vehicle	306
Defensive Driving	306
Drunk Driving	306
Control of a Vehicle	307
Braking	308
Antilock Brake System (ABS)	309
Braking in Emergencies	310
Locking Rear Axle	310
StabiliTrak® System	310
Steering	313
Off-Road Recovery	315
Passing	315
Loss of Control	316
Off-Road Driving	317
Driving at Night	330
Driving in Rain and on Wet Roads	330
Before Leaving on a Long Trip	332
Highway Hypnosis	332
Hill and Mountain Roads	333
Winter Driving	334
If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow	337
Rocking Your Vehicle to Get It Out	338
Recovery Hooks	338
Loading Your Vehicle	339
Adding a Snow Plow or Similar Equipment	345
Towing	349
Towing Your Vehicle	349
Recreational Vehicle Towing	349
Level Control	352
Autoride®	353
Towing a Trailer	353
Trailer Recommendations	367
Service and Appearance Care	369
Service	371
Accessories and Modifications	371
California Proposition 65 Warning	372
California Perchlorate Materials Requirements	372
Doing Your Own Service Work	372
Adding Equipment to the Outside of Your Vehicle	373
Fuel	373
Gasoline Octane	373
Gasoline Specifications	374
California Fuel	374
Additives	374
Fuel E85 (85% Ethanol)	375
Fuels in Foreign Countries	376
Filling the Tank	377
Filling a Portable Fuel Container	379
Checking Things Under the Hood	380
Hood Release	381
Engine Compartment Overview	382
Engine Oil	383
Engine Oil Life System	386
Engine Air Cleaner/Filter	387
Automatic Transmission Fluid (4-Speed Transmission)	390
Automatic Transmission Fluid (6-Speed Transmission)	392
Engine Coolant	396
Coolant Surge Tank Pressure Cap	399
Engine Overheating	399
Overheated Engine Protection Operating Mode	401
Cooling System	402
Engine Fan Noise	407
Power Steering Fluid	407
Windshield Washer Fluid	408
Brakes	409
Battery	413
Jump Starting	414
Rear Axle	420
Four-Wheel Drive	422
Front Axle	423
Headlamp Aiming	424
Bulb Replacement	427
Halogen Bulbs	427
Taillamps, Turn Signal, Stoplamps and Back-up Lamps	428
License Plate Lamp	429
Replacement Bulbs	429
Windshield Wiper Blade Replacement	430
Tires	432
Tire Sidewall Labeling	433
Tire Terminology and Definitions	437
Inflation - Tire Pressure	440
Tire Pressure Monitor System	441
Tire Pressure Monitor Operation	443
Tire Inspection and Rotation	446
When It Is Time for New Tires	448
Buying New Tires	448
Different Size Tires and Wheels	450
Uniform Tire Quality Grading	451
Wheel Alignment and Tire Balance	452
Wheel Replacement	453
Tire Chains	454
If a Tire Goes Flat	455
Changing a Flat Tire	456
Removing the Spare Tire and Tools	458
Removing the Flat Tire and Installing the Spare Tire	462
Secondary Latch System	468
Storing a Flat or Spare Tire and Tools	471
Spare Tire	475
Appearance Care	476
Interior Cleaning	476
Fabric/Carpet	477
Leather	478
Instrument Panel, Vinyl, and Other Plastic Surfaces	478
Care of Safety Belts	478
Weatherstrips	479
Washing Your Vehicle	479
Cleaning Exterior Lamps/Lenses	479
Finish Care	480
Windshield, Backglass, and Wiper Blades	480
Aluminum or Chrome-Plated Wheels and Trim	481
Tires	482
Sheet Metal Damage	482
Finish Damage	482
Underbody Maintenance	482
Chemical Paint Spotting	482
Vehicle Care/Appearance Materials	483
Vehicle Identification	484
Vehicle Identification Number (VIN)	484
Service Parts Identification Label	484
Electrical System	485
Add-On Electrical Equipment	485
Windshield Wiper Fuses	485
Power Windows and Other Power Options	485
Fuses and Circuit Breakers	485
Instrument Panel Fuse Block	486
Center Instrument Panel Fuse Block	487
Underhood Fuse Block	488
Capacities and Specifications	492
Maintenance Schedule	495
Maintenance Schedule	496
Introduction	496
Maintenance Requirements	496
Your Vehicle and the Environment	496
Using the Maintenance Schedule	496
Scheduled Maintenance	498
Additional Required Services	500
Maintenance Footnotes	501
Owner Checks and Services	503
At Each Fuel Fill	503
At Least Once a Month	504
At Least Once a Year	504
Recommended Fluids and Lubricants	507
Maintenance Replacement Parts	509
Engine Drive Belt Routing	510
Maintenance Record	511
Customer Assistance Information	515
Customer Assistance and Information	516
Customer Satisfaction Procedure	516
Online Owner Center	518
Customer Assistance for Text Telephone (TTY) Users	519
Customer Assistance Offices	519
GM Mobility Reimbursement Program	520
Roadside Assistance Program	520
Scheduling Service Appointments	523
Courtesy Transportation	523
Collision Damage Repair	525
Reporting Safety Defects	528
Reporting Safety Defects to the United States Government	528
Reporting Safety Defects to the Canadian Government	528
Reporting Safety Defects to General Motors	528
Service Publications Ordering Information	529
Vehicle Data Recording and Privacy	530
Event Data Recorders	530
OnStar®	531
Navigation System	531
Radio Frequency Identification (RFID)	531

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