2005 GMC ENVOY XL climate control

Driving with a Trailer
{CAUTION:
If you have a rear-most window open and
you pull a trailer with your vehicle, carbon
monoxide (CO) could come into your vehicle.
You can not see or smell CO. It can cause
unconsciousness or death. SeeEngine
Exhaust on page 2-35. To maximize your safety
when towing a trailer:
Have your exhaust system inspected for
leaks and make necessary repairs before
starting on your trip.
Keep the rear-most windows closed.If exhaust does come into your vehicle
through a window in the rear or another
opening, drive with your front, main
heating or cooling system on and with the
fan on any speed. This will bring fresh,
outside air into your vehicle. Do not use
the climate control setting for maximum air
because it only recirculates the air inside
your vehicle. SeeDual Climate Control
System on page 3-20orDual Automatic
Climate Control System on page 3-23.Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you’ll want to get
to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle you are
driving is now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check all trailer hitch parts and
attachments, safety chains, electrical connection, lamps,
tires and mirror adjustment. If the trailer has electric
brakes, start your vehicle and trailer moving and then
apply the trailer brake controller by hand to be sure
the brakes are working. This lets you check your
electrical connection at the same time.
During your trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer
brakes are still working.
4-61

Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied government test course.
For example, a tire graded 150 would wear one and
a half (1.5) times as well on the government course as
a tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire’s ability
to stop on wet pavement as measured under controlled
conditions on specied government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.
Temperature – A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation of
heat and its ability to dissipate heat when tested undercontrolled conditions on a specied indoor laboratory
test wheel. Sustained high temperature can cause the
material of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance which
all passenger car tires must meet under the Federal
Motor Vehicle Safety Standard No. 109. Grades B and A
represent higher levels of performance on the laboratory
test wheel than the minimum required by law.
Warning: The temperature grade for this tire is
established for a tire that is properly inated and not
overloaded. Excessive speed, underination, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
Wheel Alignment and Tire Balance
The tires and wheels on your vehicle were aligned
and balanced carefully at the factory to give you the
longest tire life and best overall performance.
Adjustments to wheel alignment and tire balancing will
not be necessary on a regular basis. However, if
you notice unusual tire wear or your vehicle pulling to
one side or the other, the alignment may need to
be checked. If you notice your vehicle vibrating when
driving on a smooth road, your tires and wheels
may need to be rebalanced. See your dealer for
proper diagnosis.
5-61

Fuses Usage
01 Right Door Control Module
02 Left Door Control Module
03 Liftgate Module 2
04 Truck Body Controller 3
05 Rear Fog Lamps
06 Blank
07 Truck Body Controller 2
08 Power Seats
09 Rear Wiper
10 Driver Door Module
11 Amplier
12 Passenger Door Module
13 Rear Climate Controls
14 Left Rear Parking Lamps
15 Blank
16Vehicle Center High-Mounted
Stop Lamp
17 Right Rear Parking Lamps
18 Locks
19Liftgate Module/Driver Seat
Module
20 Blank
21 Lock
23 Blank
Envoy
5-99

Fuses Usage
01 Right Door Control Module
02 Left Door Control Module
03 Liftgate Module 2
04 Truck Body Controller 3
05 Rear Fog Lamps
06 Blank
07 Truck Body Controller 2
08 Power Seats
09 Rear Wiper
10 Driver Door Module
11 Amplier
12 Passenger Door Module
13 Rear Climate Controls
14 Left Rear Parking Lamps
15 Blank
16Vehicle Center High-Mounted
Stop Lamp
17 Right Rear Parking Lamps
18 Locks
19Liftgate Module/Driver Seat
Module
20 Vent Window
21 Lock
Envoy XL
5-101

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

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