check engine GMC YUKON DENALI 2005 Workshop Manual

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 6-12.
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 5-14for 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. SeeEngine
Coolant on page 5-25for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your tires and make sure tires are inated
to the correct pressures. Do not forget to check your
spare tire. SeeTires on page 5-56for further details.
Check to make sure the spare tire is stored securely.
Push, pull and then try to turn the spare tire. If it moves,
tighten it. SeeChanging a Flat Tire on page 5-74.
6-9

At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-27if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench
®dealer for service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-27if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the ignition to RUN, but do
not start the engine. Without applying the regular
brake, try to move the shift lever out of PARK (P)
with normal effort. If the shift lever moves out
of PARK (P), contact your GM Goodwrench
®dealer
for service.
6-10

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition to LOCK in each shift lever position.
The ignition should turn to LOCK only when the
shift lever is in PARK (P).
The key should come out only in LOCK.
Contact your GM Goodwrench
®dealer if service is
required.
Parking Brake and Automatic
Transmission Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability:
With the engine running and transmission in
NEUTRAL (N), slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Contact your GM Goodwrench
®dealer if service is
required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-11

Carbon Monoxide...................2-14, 2-30, 4-38, 4-52
Care of
Safety Belts................................................5-98
Your Cassette Tape Player..........................3-100
Your CD and DVD Player...........................3-102
Your CD Player.........................................3-101
Your CDs and DVDs..................................3-101
Cargo Cover..................................................2-46
CD Changer...................................................3-96
Center Console Storage Area...........................2-43
Center Passenger Position, Safety Belts.............1-40
Chains, Tire...................................................5-73
Charging System Light....................................3-33
Check
Engine Light...............................................3-39
Checking Things Under the Hood......................5-10
Chemical Paint Spotting.................................5-102
Child Restraints
Child Restraint Systems...............................1-53
Infants and Young Children...........................1-50
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-61
Older Children.............................................1-47
Securing a Child Restraint Designed for
the LATCH System...................................1-63
Securing a Child Restraint in a Center
Rear Seat Position...................................1-65Child Restraints (cont.)
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-63
Securing a Child Restraint in the Right
Front Seat Position...................................1-67
Top Strap...................................................1-57
Top Strap Anchor Location............................1-58
Where to Put the Restraint...........................1-56
Chime Level Adjustment.................................3-102
Cigarette Lighter.............................................3-20
Cleaning
Aluminum Wheels......................................5-100
Exterior Lamps/Lenses.................................5-98
Fabric/Carpet..............................................5-95
Finish Care.................................................5-99
Glass Surfaces............................................5-97
Instrument Panel.........................................5-97
Interior Plastic Components...........................5-97
Leather......................................................5-97
Speaker Covers..........................................5-97
Tires........................................................5-101
Underbody Maintenance.............................5-102
Vinyl..........................................................5-96
Washing Your Vehicle...................................5-98
Weatherstrips..............................................5-98
Windshield, Backglass, and Wiper Blades......5-100
Wood Panels..............................................5-97
3

Driving
At Night.....................................................4-29
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-34
Hill and Mountain Roads..............................4-36
In Rain and on Wet Roads...........................4-31
Recovery Hooks..........................................4-43
Rocking Your Vehicle to Get it Out.................4-42
Winter........................................................4-38
Dual Automatic Climate Control System.............3-20
DVD
Rear Seat Entertainment System...................3-83
E
Electrical System
Add-On Equipment.....................................5-105
Center Instrument Panel Fuse Block.............5-108
Fuses and Circuit Breakers.........................5-105
Instrument Panel Fuse Block.......................5-106
Power Windows and Other Power Options....5-105
Underhood Fuse Block...............................5-109
Windshield Wiper Fuses.............................5-105
Engine
Air Cleaner/Filter.........................................5-19
Battery.......................................................5-41Engine (cont.)
Check and Service Engine Soon Light............3-39
Coolant......................................................5-25
Coolant Heater............................................2-22
Coolant Temperature Gage...........................3-37
Engine Compartment Overview......................5-12
Exhaust.....................................................2-30
Fan Noise..................................................5-35
Oil .............................................................5-14
Overheated Protection Operating Mode...........5-30
Overheating................................................5-28
Starting......................................................2-21
Entry Lighting.................................................3-18
Event Data Recorders (EDR)............................7-10
Exit Lighting...................................................3-18
Extender, Safety Belt.......................................1-47
F
Filter
Engine Air Cleaner......................................5-19
Finish Damage.............................................5-101
Fixed Mast Antenna.......................................3-102
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-74
Flat Tire, Changing.........................................5-74
Flat Tire, Storing.............................................5-90
5

Mirrors (cont.)
Outside Convex Mirror.................................2-35
Outside Heated Mirrors................................2-36
Outside Power Mirrors..................................2-34
MyGMLink.com................................................ 7-3
N
Navigation/Radio System..................................3-94
New Vehicle Break-In......................................2-19
Normal Maintenance Replacement Parts............6-14
O
Odometer......................................................3-30
Off-Road Recovery..........................................4-13
Oil
Engine.......................................................5-14
Pressure Gage............................................3-42
Older Children, Restraints................................1-47
Online Owner Center........................................ 7-3
OnStar
®System.............................................2-37
Operating Your All-Wheel-Drive Vehicle Off
Paved Roads..............................................4-16
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-25Outside
Automatic Dimming Mirror with Curb View
Assist.....................................................2-36
Convex Mirror.............................................2-35
Heated Mirrors............................................2-36
Power Mirrors.............................................2-34
Overheated Engine Protection Operating Mode....5-30
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
P
Park (P)
Shifting Into................................................2-28
Shifting Out of............................................2-29
Parking
Brake........................................................2-27
Over Things That Burn.................................2-30
Passenger Airbag Status Indicator.....................3-32
Passenger Sensing System..............................1-79
Passing.........................................................4-14
Passlock
®......................................................2-19
Power
Accessory Outlets........................................3-19
Door Locks.................................................. 2-9
Electrical System.......................................5-105
9

Reporting Safety Defects
Canadian Government..................................7-12
General Motors...........................................7-12
United States Government............................7-11
Restraint System Check
Checking Your Restraint Systems...................1-85
Replacing Restraint System Parts
After a Crash..........................................1-86
Restraint Systems
Checking....................................................1-85
Replacing Parts...........................................1-86
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....................4-42
Running Your Engine While You Are Parked.......2-31
S
Safety Belt
Reminder Light............................................3-30
Safety Belts
Care of......................................................5-98
Center Passenger Position............................1-40
Driver Position............................................1-32Safety Belts (cont.)
How to Wear Safety Belts Properly................1-32
Questions and Answers About Safety Belts.....1-31
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-44
Rear Seat Passengers.................................1-41
Right Front Passenger Position......................1-40
Safety Belt Extender....................................1-47
Safety Belt Use During Pregnancy.................1-39
Safety Belts Are for Everyone.......................1-27
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......................................1-24
Head Restraints............................................ 1-7
Heated Seats............................................... 1-5
Heated Seats, Rear....................................... 1-9
Memory.....................................................2-48
Power Lumbar.............................................. 1-4
Power Seats................................................. 1-3
Rear Seat Operation...................................... 1-8
Reclining Seatbacks...................................... 1-6
Secondary Latch System.................................5-86
11