2005 GMC SIERRA DENALI check engine

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

Check
Engine Light...............................................3-36
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-99
Child Restraints
Child Restraint Systems...............................1-33
Infants and Young Children...........................1-29
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-40
Older Children.............................................1-27
Securing a Child Restraint Designed for
the LATCH System...................................1-42
Securing a Child Restraint in a
Rear Seat Position...................................1-43
Securing a Child Restraint in the
Right Front Seat Position..........................1-45
Top Strap...................................................1-37
Top Strap Anchor Location............................1-38
Where to Put the Restraint...........................1-36
Chime Level Adjustment..................................3-94
Cigarette Lighter.............................................3-19
Cleaning
Aluminum or Chrome-Plated Wheels..............5-98
Exterior Lamps/Lenses.................................5-96
Fabric/Carpet..............................................5-92
Finish Care.................................................5-96
Glass Surfaces............................................5-95
Instrument Panel.........................................5-94
Interior Plastic Components...........................5-95
Leather......................................................5-94Cleaning (cont.)
Tires..........................................................5-98
Underbody Maintenance...............................5-99
Vinyl..........................................................5-94
Washing Your Vehicle...................................5-96
Weatherstrips..............................................5-95
Windshield and Wiper Blades........................5-97
Wood Panels..............................................5-95
Climate Control System
Dual Automatic............................................3-20
Outlet Adjustment........................................3-25
Comfort Guides, Rear Safety Belt.....................1-24
Content Theft-Deterrent....................................2-14
Control of a Vehicle.......................................... 4-5
Coolant
Engine Temperature Gage............................3-34
Heater, Engine............................................2-19
Surge Tank Pressure Cap.............................5-26
Cooling System..............................................5-29
Cruise Control Lever.......................................3-10
Cruise Control Light........................................3-40
Cupholder(s)..................................................2-41
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors....7-11
3

Engine
Air Cleaner/Filter.........................................5-19
Battery.......................................................5-40
Check and Service Engine Soon Light............3-36
Coolant......................................................5-24
Coolant Heater............................................2-19
Coolant Temperature Gage...........................3-34
Engine Compartment Overview......................5-12
Exhaust.....................................................2-27
Fan Noise..................................................5-34
Oil .............................................................5-14
Overheated Protection Operating Mode...........5-28
Overheating................................................5-26
Starting......................................................2-18
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................. 7-9
Exit Lighting...................................................3-17
Extender, Safety Belt.......................................1-26
F
Filter
Engine Air Cleaner......................................5-19
Finish Damage...............................................5-99
Fixed Mast Antenna........................................3-94
Flash-to-Pass................................................... 3-9Flat Tire........................................................5-71
Flat Tire, Changing.........................................5-72
Flat Tire, Storing.............................................5-87
Fluid
Automatic Transmission................................5-21
Power Steering...........................................5-34
Windshield Washer......................................5-36
Fog Lamps....................................................3-16
Front Axle......................................................5-48
Front Reading Lamps......................................3-18
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-41
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-41
Fuses
Center Instrument Panel Fuse Block.............5-106
Fuses and Circuit Breakers.........................5-102
Instrument Panel Fuse Block.......................5-103
Underhood Fuse Block...............................5-107
Windshield Wiper.......................................5-102
5

G
Gage
Engine Coolant Temperature.........................3-34
Fuel..........................................................3-41
Oil Pressure...............................................3-39
Speedometer..............................................3-28
Tachometer.................................................3-28
Transmission Temperature.............................3-34
Voltmeter Gage...........................................3-31
Garage Door Opener.......................................2-36
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-41
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamps............................................3-13, 5-49
Automatic Headlamp System.........................3-15
Bulb Replacement.......................................5-49
Daytime Running Lamps...............................3-14
Flash-to-Pass............................................... 3-9
Front Turn Signal, Sidemarker and Daytime
Running Lamps........................................5-50Headlamps (cont.)
Halogen Bulbs............................................5-49
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-14
Heated Seats................................................... 1-3
Heater...........................................................3-20
Highbeam On Light.........................................3-40
Highway Hypnosis...........................................4-33
Hill and Mountain Roads..................................4-34
HomeLink
®Transmitter....................................2-36
HomeLink®Transmitter, Programming................2-37
Hood
Checking Things Under................................5-10
Release.....................................................5-10
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
I
Ignition Positions.............................................2-17
Infants and Young Children, Restraints...............1-29
Ination -- Tire Pressure..................................5-62
Instrument Panel
Brightness..................................................3-16
Cluster.......................................................3-27
Overview..................................................... 3-4
6

Maintenance Schedule (cont.)
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-15
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-14
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using Your................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-36
Memory Seat.................................................2-44
Message
DIC Warnings and Messages........................3-45
Mirrors
Automatic Dimming Rearview with OnStar
®,
Compass and Temperature Display.............2-29
Outside Automatic Dimming Mirror.................2-33
Outside Convex Mirror.................................2-34
Outside Curb View Assist Mirrors...................2-33
Outside Heated Mirrors................................2-34
Outside Power Foldaway Mirrors....................2-32
Outside Power Mirrors..................................2-32
MyGMLink.com................................................ 7-3
N
Navigation/Radio System..................................3-86
New Vehicle Break-In......................................2-16
Normal Maintenance Replacement Parts............6-14
O
Odometer......................................................3-28
Odometer, Trip...............................................3-28
Off-Road Recovery..........................................4-10
Oil
Engine.......................................................5-14
Pressure Gage............................................3-39
Older Children, Restraints................................1-27
Online Owner Center........................................ 7-3
OnStar
®System.............................................2-34
Operating Your All-Wheel-Drive Vehicle Off
Paved Roads..............................................4-13
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-25
Outside
Automatic Dimming Mirror.............................2-33
Convex Mirror.............................................2-34
8

Outside (cont.)
Curb View Assist Mirrors..............................2-33
Heated Mirrors............................................2-34
Power Foldaway Mirrors...............................2-32
Power Mirrors.............................................2-32
Overheated Engine Protection Operating Mode.....5-28
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
P
Park (P)
Shifting Into................................................2-25
Shifting Out of............................................2-26
Parking
Brake........................................................2-24
Over Things That Burn.................................2-27
Passenger Airbag Status Indicator.....................3-29
Passenger Sensing System..............................1-55
Passing.........................................................4-10
Passlock
®......................................................2-16
Power
Accessory Outlets........................................3-18
Door Locks.................................................. 2-8
Electrical System.......................................5-102
Lumbar Controls........................................... 1-3
Retained Accessory (RAP)............................2-17
Seat............................................................ 1-2Power (cont.)
Steering Fluid.............................................5-34
Windows....................................................2-13
Programmable Automatic Door Locks.................. 2-9
Programming the HomeLink
®Transmitter...........2-37
Puddle Lamps................................................3-16
Q
Questions and Answers About Safety Belts.........1-12
R
Radios..........................................................3-60
Care of Your Cassette Tape Player................3-92
Care of Your CD Player...............................3-93
Care of Your CDs........................................3-93
CD Changer...............................................3-87
Navigation/Radio System..............................3-86
Radio with Cassette and CD.........................3-61
Rear Seat Audio..........................................3-86
Setting the Time..........................................3-61
Theft-Deterrent............................................3-90
Understanding Reception..............................3-92
Rear Axle......................................................5-47
Rear Safety Belt Comfort Guides......................1-24
Rear Seat Audio (RSA)....................................3-86
9

Rear Seat Entertainment System.......................3-75
Rear Seat Operation......................................... 1-6
Rear Seat Passengers, Safety Belts..................1-22
Rearview Mirror, Automatic Dimming with
OnStar
®, Compass and Temperature Display.....2-29
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-12
Recovery Hooks.............................................4-41
Recreational Vehicle Towing.............................4-51
Remote Keyless Entry System............................ 2-3
Remote Keyless Entry System, Operation............ 2-4
Removing the Flat Tire and Installing the
Spare Tire..................................................5-76
Removing the Spare Tire and Tools...................5-73
Replacement Bulbs.........................................5-54
Reporting Safety Defects
Canadian Government..................................7-10
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking Your Restraint Systems...................1-61
Replacing Restraint System Parts After
a Crash..................................................1-61
Restraint Systems
Checking....................................................1-61
Replacing Parts...........................................1-61
Retained Accessory Power (RAP)......................2-17
Right Front Passenger Position, Safety Belts......1-22Roadside
Assistance Program....................................... 7-5
Rocking Your Vehicle to Get it Out....................4-40
Running Your Engine While You Are Parked.......2-28
S
Safety Belt
Reminder Light............................................3-28
Safety Belts
Care of......................................................5-95
Driver Position............................................1-13
How to Wear Safety Belts Properly................1-13
Questions and Answers About Safety Belts.....1-12
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-24
Rear Seat Passengers.................................1-22
Right Front Passenger Position......................1-22
Safety Belt Extender....................................1-26
Safety Belt Use During Pregnancy.................1-21
Safety Belts Are for Everyone......................... 1-8
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
Head Restraints............................................ 1-6
Heated Seats............................................... 1-3
Memory.....................................................2-44
10