2007 GMC YUKON XL service indicator

Malfunction Indicator Lamp
Check Engine Light
Your vehicle has a
computer which
monitors operation of
the fuel, ignition,
and emission control
systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions are at acceptable
levels for the life of the vehicle, helping to produce
a cleaner environment. The check engine light
comes on to indicate that there is a problem and
service is required. Malfunctions often will be
indicated by the system before any problem is
apparent. This may prevent more serious damage
to your vehicle. This system is also designed to
assist your service technician in correctly
diagnosing any malfunction.Notice:If you keep driving your vehicle with
this light on, after awhile, your emission
controls may not work as well, your fuel
economy may not be as good, and your engine
may not run as smoothly. This could lead to
costly repairs that may not be covered by your
warranty.
Notice:Modications made to the engine,
transmission, exhaust, intake, or fuel system
of your vehicle or the replacement of the
original tires with other than those of the same
Tire Performance Criteria (TPC) can affect
your vehicle’s emission controls and may
cause this light to come on. Modications to
these systems could lead to costly repairs not
covered by your warranty. This may also
result in a failure to pass a required Emission
Inspection/Maintenance test. SeeAccessories
and Modifications on page 426.
236

However, E85 (85% ethanol) and other fuels
containing more than 10% ethanol must not be
used in vehicles that were not designed for
those fuels.
Notice:Your vehicle was not designed for
fuel that contains methanol. Do not use
fuel containing methanol. It can corrode metal
parts in your fuel system and also damage
the plastic and rubber parts. That damage
would not be covered under your warranty.
Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing
additive called methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant where you
buy gasoline whether the fuel contains MMT.
General Motors recommends against the use of
such gasolines. Fuels containing MMT can reduce
the life of spark plugs and the performance of
the emission control system may be affected.
The malfunction indicator lamp may turn on. If this
occurs, return to your authorized GM dealer for
service.Fuel E85 (85% Ethanol)
The 8th digit of your vehicle identication number
(VIN) shows the code letter or number that
identies your engine. You will nd the VIN at the
top left of the instrument panel. SeeVehicle
Identication Number (VIN) on page 538.
If your vehicle has the 5.3L V8 engine (Code 0) or
the 5.3L V8 engine (Code 3), you may use
either regular unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85); also seeFuel
on page 428. In all other engines, use only the
unleaded gasoline described underGasoline
Octane on page 428.
Only vehicles that have the 5.3L V8 engine
(Code 0) or the 5.3L V8 engine (Code 3) may use
85% ethanol fuel (E85). General Motors
encourages the use of E85 in vehicles that are
designed to use it. The ethanol in E85 is a
“renewable” fuel, meaning it is made from
renewable sources such as corn and other crops.
Many service stations will not have an 85% ethanol
fuel (E85) pump available. The U. S. Department
of Energy has an alternative fuels website
(http://www.eere.energy.gov/afdc/infrastructure/
locator.html) that can help you nd E85 fuel.
430

Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the
brake pads are worn and new pads are needed.
The sound may come and go or be heard all
the time your vehicle is moving, except when you
are pushing on the brake pedal rmly.
{CAUTION:
The brake wear warning sound means that
soon your brakes will not work well. That
could lead to an accident. When you hear
the brake wear warning sound, have your
vehicle serviced.
Notice:Continuing to drive with worn-out
brake pads could result in costly brake repair.Some driving conditions or climates may cause a
brake squeal when the brakes are rst applied
or lightly applied. This does not mean something
is wrong with your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated,
inspect brake pads for wear and evenly tighten
wheel nuts in the proper sequence to GM torque
specications.
Brake linings should always be replaced as
complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return
to normal height, or if there is a rapid increase in
pedal travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you make a brake stop, your disc
brakes adjust for wear.
465

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 438. Reset oil life system.
SeeEngine Oil Life System on page 441.An Emission Control Service.••
Lubricate chassis components.See footnote #.••
Visually check for any leaks or damage.See footnote (j).••
Inspect engine air cleaner lter or change indicator (if equipped). If necessary,
replace lter. SeeEngine Air Cleaner/Filter on page 443.See footnote (l).•
Rotate tires and check ination pressures and wear. SeeTire Inspection and
Rotation on page 497and “Tire Wear Inspection” inAt Least Once a Month on
page 561.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid as
needed.••
Perform any needed additional services. See “Additional Required Services” in
this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Check transmission uid level and add uid as needed.•
556

Additional Required Services
The following services should be performed at the rst maintenance service (IorII) after the indicated
miles (kilometers) shown for each item.
Additional Required Services
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)
Inspect fuel system for damage
or leaks.• •••••
Inspect exhaust system for loose or
damaged components.• •••••
Vehicles without a lter restriction
indicator: Replace engine air cleaner
lter. SeeEngine Air Cleaner/Filter on
page 443.•••
Change automatic transmission uid
and lter (severe service).
See footnote (h).•••
Change automatic transmission uid
and lter (normal service).•
Four-wheel drive: Change transfer case
uid.See footnote (g).•••
Inspect evaporative control system.
An Emission Control Service.
See footnotes † and (k).•••
557

M
Maintenance Schedule
Additional Required Services..................... 557
At Each Fuel Fill....................................... 560
At Least Once a Month............................ 561
At Least Once a Year............................... 562
Introduction............................................... 552
Maintenance Footnotes............................. 558
Maintenance Record................................. 568
Maintenance Requirements....................... 552
Normal Maintenance Replacement Parts..... 566
Owner Checks and Services..................... 560
Recommended Fluids and Lubricants........ 564
Scheduled Maintenance............................ 555
Using........................................................ 553
Your Vehicle and the Environment............ 552
Malfunction Indicator Light............................ 236
Manual Seats................................................... 9
Memory Seat, Mirrors, and Pedals................. 13
Message
DIC Warnings and Messages.................... 254
Mirrors
Automatic Dimming Rearview with
Compass and Temperature Display........ 160
Automatic Dimming Rearview with
OnStar
®, Compass and Temperature
Display.................................................. 157Mirrors (cont.)
Outside Automatic Dimming Mirror............ 166
Outside Convex Mirror.............................. 166
Outside Curb View Assist Mirrors.............. 166
Outside Heated Mirrors............................. 167
Outside Manual Mirrors............................. 163
Outside Power Foldaway Mirrors............... 165
Outside Power Mirrors.............................. 164
Outside Trailer-Tow Mirrors....................... 163
MyGMLink.com............................................. 574
N
Navigation/Radio System,
see Navigation Manual.............................. 321
New Vehicle Break-In................................... 136
Normal Maintenance Replacement Parts...... 566
O
Odometer..................................................... 226
Odometer, Trip............................................. 226
Off-Road Driving........................................... 356
Off-Road Recovery....................................... 353
601

Oil
Engine...................................................... 438
Pressure Gage.......................................... 239
Pressure Light.......................................... 240
Oil, Engine Oil Life System.......................... 441
Older Children, Restraints.............................. 61
Online Owner Center................................... 574
OnStar
®System, see OnStar®Manual......... 167
Other Warning Devices................................ 188
Outlet Adjustment......................................... 220
Outlet(s), Accessory Power........................... 208
Outside
Automatic Dimming Mirror......................... 166
Convex Mirror........................................... 166
Curb View Assist Mirrors........................... 166
Heated Mirrors.......................................... 167
Manual Mirrors.......................................... 163
Power Foldaway Mirrors............................ 165
Power Mirrors........................................... 164
Trailer-Tow Mirrors.................................... 163
Overheated Engine Protection
Operating Mode........................................ 454
Owner Checks and Services........................ 560
Owners, Canadian........................................... 3
P
Paint, Damage............................................. 536
Park Aid....................................................... 205
Park (P)
Shifting Into.............................................. 152
Shifting Out of.......................................... 154
Parking
Assist....................................................... 205
Brake........................................................ 151
Over Things That Burn............................. 154
Passenger Airbag Status Indicator................ 228
Passenger Sensing System.......................... 100
Passing........................................................ 353
PASS-Key
®III+............................................ 134
PASS-Key®III+ Operation............................ 134
Power
Accessory Outlet(s)................................... 208
Door Locks............................................... 121
Electrical System...................................... 539
Liftgate..................................................... 125
Lumbar Controls......................................... 11
Retained Accessory (RAP)........................ 138
Running Boards........................................ 129
Seat........................................................... 10
602

Seats (cont.)
Head Restraints.......................................... 18
Heated Seats.............................................. 12
Heated Seats - Rear.................................. 19
Manual......................................................... 9
Memory, Mirrors, and Pedals...................... 13
Power Lumbar............................................ 11
Power Seats............................................... 10
Reclining Seatbacks.................................... 15
Third Row Seat.......................................... 33
Secondary Latch System.............................. 519
Securing a Child Restraint
Center Front Seat Position.......................... 85
Rear Seat Position...................................... 83
Right Front Seat Position............................ 86
Security Light............................................... 241
Service......................................................... 426
Accessories and Modications................... 426
Adding Equipment to the Outside of
Your Vehicle.......................................... 428
California Proposition 65 Warning............. 427
Doing Your Own Work.............................. 427
Engine Soon Light.................................... 236
Publications Ordering Information.............. 590
Servicing Your Airbag-Equipped Vehicle......... 104
Setting the Time...................................276, 277
Sheet Metal Damage................................... 535Shifting Into Park (P).................................... 152
Shifting Out of Park (P)................................ 154
Shoulder Belt Height Adjuster......................... 51
Signals, Turn and Lane-Change................... 191
Snow Plow................................................... 396
Spare Tire.................................................... 526
Installing................................................... 513
Removing................................................. 509
Storing...................................................... 522
Specications, Capacities............................. 548
Speedometer................................................ 226
Split Bench Seat (60/40)................................ 20
StabiliTrak
®System...................................... 348
StabiliTrak®Indicator Light............................ 234
Starting Your Engine.................................... 138
Steering....................................................... 351
Steering Wheel Controls, Audio.................... 334
Steering Wheel, Tilt Wheel........................... 189
Storage Areas
Cargo Management System...................... 178
Center Console Storage Area................... 175
Cupholder(s)............................................. 174
Glove Box................................................. 174
Luggage Carrier........................................ 175
Rear Seat Armrest.................................... 176
Rear Storage Area.................................... 176
605