2006 GMC YUKON check engine light

How to Add Automatic Transmission
Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission uid to use. SeeRecommended
Fluids and Lubricants on page 6-13.
Add uid only after checking the transmission uid
while it is hot. A cold check is used only as a reference.
If the uid level is low, add only enough of the proper
uid to bring the level up to the HOT area for a hot
check. It does not take much uid, generally less than
one pint (0.5 L). Do not overll.
Notice:Use of the incorrect automatic transmission
uid may damage your vehicle, and the damages
may not be covered by your warranty. Always
use the automatic transmission uid listed in
Recommended Fluids and Lubricants on page 6-13.
After adding uid, recheck the uid level as
described under “How to Check Automatic
Transmission Fluid,” earlier in this section.
When the correct uid level is obtained, push the
dipstick back in all the way; then ip the handle
down to lock the dipstick in place.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for ve years or 150,000 miles
(240 000 km), whichever occurs rst, if you add only
DEX-COOL
®extended life coolant.
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating
on page 5-28.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core, or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at the rst maintenance
service after each 25,000 miles (41 500 km) or
24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-25

{CAUTION:
Using a match near a battery can cause
battery gas to explode. People have been
hurt doing this, and some have been blinded.
Use a ashlight if you need more light.
Be sure the battery has enough water. You do
not need to add water to the battery installed
in your new vehicle. But if a battery has ller
caps, be sure the right amount of uid is there.
If it is low, add water to take care of that rst.
If you do not, explosive gas could be present.
Battery uid contains acid that can burn you.
Do not get it on you. If you accidentally get it
in your eyes or on your skin, ush the place
with water and get medical help immediately.
{CAUTION:
Fans or other moving engine parts can injure
you badly. Keep your hands away from moving
parts once the engine is running.
5. Check that the jumper cables do not have loose
or missing insulation. If they do, you could get a
shock. The vehicles could be damaged too.
Before you connect the cables, here are some
basic things you should know. Positive (+) will go
to positive (+) or to a remote positive (+) terminal
if the vehicle has one. Negative (−) will go to a
heavy, unpainted metal engine part or to a remote
negative (−) terminal if the vehicle has one.
Do not connect positive (+) to negative (−)oryou
will get a short that would damage the battery
and maybe other parts too. And do not connect the
negative (−) cable to the negative (−) terminal on
the dead battery because this can cause sparks.
5-44

C
California Fuel.................................................. 5-5
California Proposition 65 Warning....................... 5-3
Canadian Owners................................................ ii
Capacities and Specications..........................5-114
Carbon Monoxide...................2-13, 2-35, 4-40, 4-60
Care of
Safety Belts................................................5-99
Your Cassette Tape Player..........................3-134
Your CD and DVD Player...........................3-135
Your CDs and DVDs..................................3-135
Cargo Cover..................................................2-59
Center Console Storage Area...........................2-57
Center Passenger Position, Safety Belts.............1-40
Chains, Tire...................................................5-74
Check
Engine Light...............................................3-46
Checking Things Under the Hood......................5-10
Chemical Paint Spotting.................................5-103
Child Restraints
Child Restraint Systems...............................1-53
Infants and Young Children...........................1-50
Lower Anchors and Tethers for Children..........1-58
Older Children.............................................1-47
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-66
Securing a Child Restraint in the Center
Front Seat Position...................................1-70Child Restraints (cont.)
Securing a Child Restraint in the Center
Rear Seat Position...................................1-68
Securing a Child Restraint in the Right
Front Seat Position...................................1-70
Where to Put the Restraint...........................1-57
Chime Level Adjustment.................................3-136
Cigarette Lighter.............................................3-21
Cleaning
Aluminum or Chrome-Plated Wheels.............5-102
Exterior Lamps/Lenses................................5-100
Fabric/Carpet..............................................5-98
Finish Care...............................................5-100
Inside of Your Vehicle..................................5-96
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-99
Leather......................................................5-98
Tires........................................................5-103
Underbody Maintenance.............................5-103
Washing Your Vehicle.................................5-100
Weatherstrips..............................................5-99
Windshield, Backglass, and Wiper Blades......5-101
Climate Control System...................................3-22
Dual..........................................................3-23
Dual Automatic............................................3-25
Outlet Adjustment........................................3-31
Rear Air Conditioning and Heating System......3-32
Rear Air Conditioning and Heating System,
Electronic................................................3-33
3

Driving (cont.)
Rocking Your Vehicle to Get it Out.................4-44
Winter........................................................4-40
Dual Automatic Climate Control System.............3-25
Dual Climate Control System............................3-23
DVD
Rear Seat Entertainment System..................3-118
E
Electrical System
Add-On Equipment.....................................5-106
Center Instrument Panel Fuse Block.............5-108
Fuses and Circuit Breakers.........................5-106
Instrument Panel Fuse Block.......................5-107
Power Windows and Other Power Options....5-106
Underhood Fuse Block...............................5-109
Windshield Wiper Fuses.............................5-106
Engine
Air Cleaner/Filter.........................................5-20
Battery.......................................................5-41
Check and Service Engine Soon Light............3-46
Coolant......................................................5-25
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-43
Drive Belt Routing.......................................6-16
Engine Compartment Overview......................5-12
Exhaust.....................................................2-35
Fan Noise..................................................5-35Engine (cont.)
Oil .............................................................5-15
Oil Life System...........................................5-18
Overheated Protection Operating Mode...........5-30
Overheating................................................5-28
Starting......................................................2-20
Entry Lighting.................................................3-20
Event Data Recorders (EDR)............................7-10
Exit Lighting...................................................3-20
Extender, Safety Belt.......................................1-46
F
Filter
Engine Air Cleaner......................................5-20
Finish Damage.............................................5-103
Fixed Mast Antenna.......................................3-136
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-75
Flat Tire, Changing.........................................5-76
Flat Tire, Storing.............................................5-92
Fluid
Automatic Transmission................................5-22
Power Steering...........................................5-36
Windshield Washer......................................5-37
Fog Lamps....................................................3-18
Four-Wheel Drive....................................2-26, 5-48
Four-Wheel-Drive Light....................................3-50
Front Axle......................................................5-49
5

Reporting Safety Defects
Canadian Government..................................7-14
General Motors...........................................7-15
United States Government............................7-14
Restraint System Check
Checking the Restraint Systems....................1-88
Replacing Restraint System Parts
After a Crash..........................................1-89
Retained Accessory Power (RAP)......................2-20
Right Front Passenger Position, Safety Belts......1-40
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-44
Routing, Engine Drive Belt...............................6-16
Running the Engine While Parked.....................2-36
S
Safety Belt
Reminder Light............................................3-37
Safety Belts
Care of......................................................5-99
Center Passenger Position............................1-40
Driver Position............................................1-32
How to Wear Safety Belts Properly................1-32
Questions and Answers About Safety Belts........1-31
Rear Outside Passenger Positions.................1-42
Rear Safety Belt Comfort Guides...................1-44
Right Front Passenger Position......................1-40Safety Belts (cont.)
Safety Belt Extender....................................1-46
Safety Belt Use During Pregnancy.................1-39
Safety Belts Are for Everyone.......................1-26
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
50/50 Split Bench Seat.................................1-13
60/40 Split Bench Seat.................................1-10
Bench Seat................................................1-18
Bucket Seats, Rear......................................1-23
Head Restraints............................................ 1-7
Heated Seats............................................... 1-5
Manual........................................................ 1-3
Memory.....................................................2-62
Power Lumbar.............................................. 1-4
Power Seats................................................. 1-4
Rear Seat Operation...................................... 1-8
Reclining Seatbacks...................................... 1-6
Secondary Latch System.................................5-88
Securing a Child Restraint
Center Front Seat Position............................1-70
Center Rear Seat Position............................1-68
Rear Outside Seat Position...........................1-66
Right Front Seat Position..............................1-70
Security Light.................................................3-49
Service........................................................... 5-3
Accessories and Modications......................... 5-3
Adding Equipment to the Outside
of Your Vehicle.......................................... 5-4
11