2005 GMC ENVOY XL ECU

Follow this diagram to store the underbody-mounted
spare.
A. Wheel Wrench
B. Hoist Shaft
C. Extension(s)
D. Retainer
E. Spare or Flat Tire
(Valve Stem
Pointed Up)
1. Put the tire on the ground at the rear of the vehicle,
with the valve stem pointed up and to the rear.
2. Pull the retainer (D) through the wheel.
3. Put the socket end of the extension (C), on an
45 degree angle downward, through the hole in
the rear bumper and into the hoist shaft (B).
4. Raise the tire fully against the underside of the
vehicle. Continue turning the wheel wrench (A)
clockwise until you hear two clicks or feel it skip
twice. This indicates that the tire is secure and the
cable is tight. The spare tire hoist cannot be
overtightened.5. Make sure the tire is stored securely. Push, pull (A),
and then try to turn (B) the tire. If the tire moves,
use the wheel wrench and socket end of the
extension to tighten the cable.
5-79

At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-50for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-66.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-57.
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 2-31.
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 vehicle
should start only in PARK (P) or NEUTRAL (N).
If the vehicle starts in any other position, contact
your GM Goodwrench
®dealer for service.
6-9

We will provide the following services during the
Bumper-to-Bumper warranty period, at no expense
to you:
Fuel Delivery:Delivery of enough fuel
($5 maximum) for the customer to get to the
nearest service station.
Lock-out Service (identication required):
Replacement keys or locksmith service will
be covered at no charge if you are unable to gain
entry into your vehicle. Delivery of the replacement
key will be covered within 10 miles (16 km).
Emergency Tow:Tow to the nearest dealership for
warranty service or in the event of a
vehicle-disabling accident. Assistance provided
when the vehicle is mired in sand, mud, or snow.
Flat Tire Change:Installation of a spare tire will be
covered at no charge. The customer is responsible
for the repair or replacement of the tire if not
covered by a warrantable failure.
Jump Start:No-start occurrences which require a
battery jump start will be covered at no charge.
Dealer Locator Service
Trip Routing:Your Roadside Assistance
Representative can provide you with specic
information regarding this feature.
Trip Interruption Expense Benets:Your
Roadside Assistance Representative can provide
you with specic information regarding this feature.In many instances, mechanical failures are covered
under GMC’s Bumper-to-Bumper warranty. However,
when other services are utilized, our Roadside
Assistance Representatives will explain any payment
obligations you might incur.
For prompt and efficient assistance when calling, please
provide the following to the Roadside Assistance
Representative:
Your name, home address, and home
telephone number.
Telephone number of your location.
Location of the vehicle.
Model, year, color, and license plate number of
the vehicle.
Mileage, Vehicle Identication Number (VIN) and
delivery date of the vehicle.
Description of the problem.
While we hope you never have the occasion to use our
service, it is added security while traveling for you
and your family. Remember, we are only a phone call
away. GMC Roadside Assistance: 1-800-462-8782, text
telephone (TTY) users, call 1-888-889-2438.
GMC reserves the right to limit services or
reimbursement to an owner or driver when, in GMC’s
judgement, the claims become excessive in frequency or
type of occurrence.
7-6

Check
Engine Light...............................................3-41
Gages Warning Light...................................3-47
Check Gas Cap Light......................................3-48
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-88
Child Restraints
Child Restraint Systems...............................1-37
Infants and Young Children...........................1-34
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-44
Older Children.............................................1-31
Securing a Child Restraint Designed for
the LATCH System...................................1-46
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-46
Securing a Child Restraint in the Center
Seat Position...........................................1-48
Securing a Child Restraint in the Right
Front Seat Position...................................1-49
Top Strap...................................................1-41
Top Strap Anchor Location............................1-42
Where to Put the Restraint...........................1-40
Chime Level Adjustment.................................3-129
Cigarette Lighter.............................................3-20
Cleaning
Aluminum Wheels........................................5-87
Exterior Lamps/Lenses.................................5-85
Fabric/Carpet..............................................5-83
Finish Care.................................................5-86Cleaning (cont.)
Inside of Your Vehicle..................................5-82
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-84
Leather......................................................5-84
Tires..........................................................5-88
Underbody Maintenance...............................5-88
Washing Your Vehicle...................................5-85
Weatherstrips..............................................5-85
Windshield, Backglass, and Wiper Blades.......5-86
Climate Control System
Dual..........................................................3-20
Dual Automatic............................................3-23
Outlet Adjustment........................................3-27
Rear..........................................................3-28
Comfort Guides, Rear Safety Belt.....................1-27
Content Theft-Deterrent....................................2-17
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-58
Coolant
Engine Temperature Gage............................3-40
Heater, Engine............................................2-23
Cooling System..............................................5-28
Cruise Control................................................3-11
Cruise Control Light........................................3-46
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
3

Customer Assistance Information (cont.)
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Delayed Locking............................................... 2-9
Displacement on Demand (DoD).......................2-24
Doing Your Own Service Work........................... 5-4
Dome Lamp Override......................................3-18
Dome Lamps.................................................3-17
Door
Delayed Locking........................................... 2-9
Locks.......................................................... 2-8
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Driver
Position, Safety Belt.....................................1-18Driver Information Center (DIC).........................3-49
DIC Operation and Displays..........................3-50
DIC Vehicle Customization............................3-56
DIC Warnings and Messages........................3-53
Driving
At Night.....................................................4-28
City...........................................................4-32
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-33
Hill and Mountain Roads..............................4-36
In Rain and on Wet Roads...........................4-29
Rocking Your Vehicle to Get it Out.................4-43
Winter........................................................4-38
Dual Automatic Climate Control System.............3-23
Dual Climate Control System............................3-20
DVD
Rear Seat Entertainment System..................3-113
E
Electrical System
Add-On Equipment......................................5-91
Engine Compartment Fuse Block...................5-92
Fuses and Circuit Breakers...........................5-91
Headlamps.................................................5-91
Power Windows and Other Power Options......5-91
4

Instrument Panel
Overview..................................................... 3-4
Instrument Panel (I/P)
Brightness..................................................3-17
Cluster.......................................................3-32
J
Jump Starting.................................................5-39
K
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
L
Labelling, Tire Sidewall....................................5-51
Lamps
Battery Run-Down Protection.........................3-19
Dome........................................................3-17
Dome Lamp Override...................................3-18
Fog ...........................................................3-17
Reading.....................................................3-18
LATCH System
Child Restraints...........................................1-44
Securing a Child Restraint Designed for
the LATCH System...................................1-46LATCH System (cont.)
Liftgate/Liftglass..............................................2-13
Liftglass/Liftgate..............................................2-13
Light
Airbag Readiness........................................3-35
Anti-Lock Brake System Warning...................3-40
Brake System Warning.................................3-38
Change Engine Oil......................................3-45
Charging System.........................................3-37
Check Gages Warning.................................3-47
Check Gas Cap..........................................3-48
Cruise Control.............................................3-46
Gate Ajar...................................................3-47
Highbeam On.............................................3-46
Low Fuel Warning.......................................3-48
Malfunction Indicator....................................3-41
Passenger Airbag Status Indicator..................3-36
Passenger Safety Belt Reminder....................3-34
Reduced Engine Power................................3-46
Safety Belt Reminder...................................3-34
Security.....................................................3-45
Service Four-Wheel-Drive Warning Light.........3-47
Lighting
Entry.........................................................3-18
Exit...........................................................3-18
Loading Your Vehicle.......................................4-43
Locking Rear Axle...........................................4-10
Lockout Protection..........................................2-12
7

Locks
Delayed Locking........................................... 2-9
Door........................................................... 2-8
Lockout Protection.......................................2-12
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Loss of Control...............................................4-13
Low Fuel Warning Light...................................3-48
Luggage Carrier..............................................2-54
Lumbar
Manual Controls............................................ 1-5
Power Controls............................................. 1-5
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-8
At Least Once a Month.................................. 6-9
At Least Once a Year.................................... 6-9
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........................... 6-8
Recommended Fluids and Lubricants.............6-12Maintenance Schedule (cont.)
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-3
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-41
Manual Lumbar Controls.................................... 1-5
Manual Seats................................................... 1-3
Memory Seat.................................................2-60
Message
DIC Warnings and Messages........................3-53
Mirrors
Manual Rearview Mirror................................2-37
Manual Rearview Mirror with Compass...........2-38
Manual Rearview Mirror with Compass
and Temperature......................................2-42
Manual Rearview Mirror with OnStar®.............2-37
Manual Rearview Mirror with OnStar®
and Compass..........................................2-40
Manual Rearview Mirror with OnStar®,
Compass, and Temperature Display............2-44
Outside Convex Mirror.................................2-47
Outside Curb View Assist Mirror....................2-46
Outside Heated Mirrors................................2-47
Outside Manual Mirrors................................2-46
Outside Power Mirrors..................................2-46
MyGMLink.com................................................ 7-3
8

Q
Questions and Answers About Safety Belts.........1-17
R
Radiator Pressure Cap....................................5-26
Radios..........................................................3-62
Care of Your Cassette Tape Player...............3-127
Care of Your CD and DVD Player................3-128
Care of Your CDs and DVDs.......................3-128
Navigation/Radio System, see
Navigation Manual..................................3-113
Radio with Cassette and CD.........................3-87
Radio with CD....................................3-63, 3-73
Radio with Six-Disc CD..............................3-100
Rear Seat Audio........................................3-124
Setting the Time..........................................3-62
Theft-Deterrent..........................................3-125
Understanding Reception............................3-127
Rainsense™ Wipers.......................................... 3-9
Reading Lamps..............................................3-18
Rear Axle......................................................5-43
Locking......................................................4-10
Rear Climate Control System............................3-28
Rear Compartment Storage Panel/Cover............2-56
Rear Door Security Locks................................2-12
Rear Floor Storage Lid....................................2-58
Rear Safety Belt Comfort Guides......................1-27Rear Seat Audio (RSA)..................................3-124
Rear Seat Entertainment System.....................3-113
Rear Seat Operation......................................... 1-9
Rear Seat Passengers, Safety Belts..................1-24
Rearview Mirror with Compass..........................2-38
Rearview Mirror with Compass and
Temperature...............................................2-42
Rearview Mirror with OnStar®...........................2-37
Rearview Mirror with OnStar®and Compass.......2-40
Rearview Mirror with OnStar®, Compass,
and Temperature Display..............................2-44
Rearview Mirrors.............................................2-37
Reclining Seatbacks.......................................... 1-7
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-50
Reduced Engine Power Light............................3-46
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
Removing the Flat Tire and Installing
the Spare Tire.............................................5-70
Removing the Spare Tire and Tools...................5-67
Replacement Bulbs.........................................5-47
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking the Restraint Systems....................1-67
Replacing Restraint System Parts
After a Crash..........................................1-68
10