2005 GMC ENVOY XUV engine

Vehicle Damage Warnings
Also, in this manual you will nd these notices:
Notice:These mean there is something that could
damage your vehicle.
A notice tells about something that can damage the
vehicle. Many times, this damage would not be covered
by your vehicle’s warranty, and it could be costly.
But the notice will tell what to do to help avoid
the damage.
When you read other manuals, you might see
CAUTION and NOTICE warnings in different colors
or in different words.
There are also warning labels on the vehicle.
They use the same words, CAUTION or NOTICE.
Vehicle Symbols
The vehicle has components and labels that use
symbols instead of text. Symbols are shown along
with the text describing the operation or information
relating to a specic component, control, message,
gage, or indicator.
If you need help guring out a specic name of a
component, gage, or indicator, reference the
following topics:
Seats and Restraint Systems in Section 1
Features and Controls in Section 2
Instrument Panel Overview in Section 3
Climate Controls in Section 3
Warning Lights, Gages, and Indicators in Section 3
Audio System(s) in Section 3
Engine Compartment Overview in Section 5
iv

Power Lumbar
Your vehicle may have this feature. The driver’s and
passenger’s seatback lumbar support can be adjusted
by moving a single control located on the outboard
side of the seat cushions. To increase or decrease
support, hold the control forward or rearward.
Keep in mind that as your seating position changes,
as it may during long trips, so should the position of
your lumbar support. Adjust the seat as needed.
Heated Seats
Your vehicle may have
heated front seats.
The buttons used to control
this feature are located
on the front door armrests.
The engine must be
running for the heated seat
feature to work.To heat the entire seat, press the horizontal button with
the heated seat symbol. Press the button repeatedly
to cycle through the temperature settings of high,
medium, low and off. The indicator lights will glow to
designate the level of heat selected: three for high,
two for medium and one for low. The low setting warms
the seatback and cushion until the seat temperature
is near body temperature. The medium and high settings
heat the seatback and seat cushion to a slightly
higher temperature. You will be able to feel heat in
about two minutes.
To heat only the seatback, press the button with the
words BACK ONLY. An indicator light on the switch will
glow to designate that only the seatback is being
heated. Additional presses will cycle through the heat
levels for the seatback only. Press the horizontal button
again to heat the whole seat.
The feature will shut off automatically when the ignition
is turned off.
1-3

Keys...............................................................2-3
Remote Keyless Entry System.........................2-5
Remote Keyless Entry System Operation...........2-6
Doors and Locks.............................................2-8
Door Locks....................................................2-8
Power Door Locks..........................................2-9
Delayed Locking.............................................2-9
Programmable Automatic Door Locks..............2-10
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Midgate.......................................................2-13
Tailgate.......................................................2-14
Power Roof.................................................2-18
Windows........................................................2-20
Power Windows............................................2-21
Sun Visors...................................................2-22
Theft-Deterrent Systems..................................2-22
Content Theft-Deterrent.................................2-22
Passlock
®....................................................2-24
Starting and Operating Your Vehicle................2-24
New Vehicle Break-In....................................2-24
Ignition Positions..........................................2-25Retained Accessory Power (RAP)...................2-25
Starting Your Engine.....................................2-26
Adjustable Throttle and Brake Pedal................2-27
Engine Coolant Heater..................................2-27
Displacement on Demand (DoD).....................2-28
Automatic Transmission Operation...................2-29
Four-Wheel Drive..........................................2-32
Parking Brake..............................................2-36
Shifting Into Park (P).....................................2-37
Shifting Out of Park (P).................................2-39
Parking Over Things That Burn.......................2-39
Engine Exhaust............................................2-40
Running Your Engine While You Are Parked.......2-40
Mirrors...........................................................2-42
Manual Rearview Mirror.................................2-42
Manual Rearview Mirror with OnStar
®..............2-42
Manual Rearview Mirror with Compass............2-42
Manual Rearview Mirror with OnStar
®and
Compass.................................................2-44
Manual Rearview Mirror with Compass and
Temperature.............................................2-46
Manual Rearview Mirror with OnStar
®,
Compass, and Temperature Display.............2-48
Section 2 Features and Controls
2-1

Midgate
{CAUTION:
It can be dangerous to drive with the cargo
area covered and the tailgate and the midgate
open because carbon monoxide (CO) gas can
come into your vehicle. You cannot see or
smell CO. It can cause unconsciousness and
even death. If you must drive with the tailgate
and midgate open or if electrical wiring or
other cable connections must pass through
the seal between the body and the midgate:
Make sure all windows are shut.
Turn the fan on your heating or cooling
system to its highest speed with the
setting on outside air. That will force
outside air into your vehicle. SeeDual
Climate Control System on page 3-20.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-40.
Midgate
Your vehicle is equipped with a midgate and power
midgate glass. The midgate allows you to extend the
length of your vehicle’s cargo area.
Lowering the Midgate
The midgate can be lowered to allow the cargo area of
your vehicle to extend into the cab. The midgate
cannot be lowered when the glass is up.
To lower the midgate, do the following:
1. Fold and tumble the rear seats. The front seats might
have to be moved forward slightly to allow the rear
seats to fold and tumble. SeeRear Seat Operation
on page 1-6for more information.
2.
C(Midgate glass):Press this overhead console
button to lower the midgate glass with the key in the
ignition. The midgate can be lowered without the key
in the ignition if the midgate glass is already down.
{CAUTION:
When the midgate is raised or lowered,
unsecured safety belts can be damaged and
may not restrain you in a crash. To help avoid
personal injury, always secure belts in the
retainers before operating the midgate.
2-13

Passlock®
Your vehicle is equipped with the Passlock®
theft-deterrent system.
Passlock
®is a passive theft-deterrent system.
Passlock®enables fuel if the ignition lock cylinder is
turned with a valid key. If a correct key is not used or the
ignition lock cylinder is tampered with, the fuel system
is disabled and the vehicle will not start.
During normal operation, the security light will turn off
approximately ve seconds after the key is turned
to RUN.
If the engine stalls and the security light ashes, wait
about 10 minutes until the light stops ashing before
trying to restart the engine. Remember to release
the key from START as soon as the engine starts.
If the engine does not start after three tries, the vehicle
needs service.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the
engine off. However, your Passlock
®system is
not working properly and must be serviced by your
dealer. Your vehicle is not protected by Passlock
®
at this time. You may also want to check the fuse.
See your dealer for service.
Starting and Operating
Your Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
Keep your speed at 55 mph (88 km/h) or less
for the rst 500 miles (805 km).
Do not drive at any one speed — fast or
slow — for the rst 500 miles (805 km).
Do not make full-throttle starts.
Avoid making hard stops for the rst 200 miles
(322 km) or so. During this time your new brake
linings are not yet broken in. Hard stops with new
linings can mean premature wear and earlier
replacement. Follow this breaking-in guideline
every time you get new brake linings.
Do not tow a trailer during break-in. SeeTowing a
Trailer on page 4-55for more information.
2-24

Ignition Positions
Use the key to turn the ignition switch to four different
positions.
A (Lock):This position locks the ignition and
transmission. It is a theft-deterrent feature. You will only
be able to remove the key when the ignition is turned
to LOCK.
Notice:Using a tool to force the key from the
ignition switch could cause damage or break the key.
Use the correct key and turn the key only with your
hand. Make sure the key is in all the way. If none of
this works, then your vehicle needs service.B (Accessory):This position lets you use things
like the radio and the windshield wipers when the
engine is off.
Notice:Lengthy operation of features such as
the radio in the accessory ignition position may
drain the battery and prevent your vehicle from
starting. Do not operate your vehicle in the
accessory ignition position for a long period
of time.
C (Run):This is the position for driving.
D (Start):This position starts the engine.
Retained Accessory Power (RAP)
Your vehicle is equipped with a Retained Accessory
Power (RAP) feature which will allow certain features of
your vehicle to continue to work up to 20 minutes
after the ignition key is turned to LOCK.
Your radio, power windows, sunroof (option) and
overhead console (including tailgate glass and power
roof) will work when the ignition key is in RUN or
ACCESSORY. Once the key is turned from RUN to
LOCK, these features will continue to work for up
to 20 minutes or until a door is opened.
2-25

Starting Your Engine
Move your shift lever to PARK (P) or NEUTRAL (N).
Your engine will not start in any other position — that is
a safety feature. To restart when you are already
moving, use NEUTRAL (N) only.
Notice:Do not try to shift to PARK (P) if your
vehicle is moving. If you do, you could damage the
transmission. Shift to PARK (P) only when your
vehicle is stopped.
1. With your foot off the accelerator pedal, turn the
ignition key to START. When the engine starts,
let go of the key. The idle speed will go down as
your engine gets warm.
Notice:Holding your key in START for longer than
15 seconds at a time will cause your battery to
be drained much sooner. And the excessive heat
can damage your starter motor. Wait about
15 seconds between each try to help avoid draining
your battery or damaging your starter.
2. If it does not start within 10 seconds, push the
accelerator pedal all the way to the oor, while
you hold the ignition key in START. When the
engine starts, let go of the key and let up on the
accelerator pedal. Wait about 15 seconds between
each try.When starting your engine in very cold weather
(below 0°F or−18°C), do this:
1. With your foot off the accelerator pedal, turn the
ignition key to START and hold it there up to
15 seconds. When the engine starts, let go of
the key.
2. If your engine still will not start, or starts but then
stops, it could be ooded with too much gasoline.
Try pushing your accelerator pedal all the way to the
oor and holding it there as you hold the key in
START for about three seconds. When the engine
starts, let go of the key and accelerator. If the
vehicle starts briey but then stops again, do the
same thing, but this time keep the pedal down
for ve or six seconds. This clears the extra
gasoline from the engine.
Notice:Your engine is designed to work with the
electronics in your vehicle. If you add electrical
parts or accessories, you could change the way the
engine operates. Before adding electrical equipment,
check with your dealer. If you do not, your engine
might not perform properly.
2-26

Adjustable Throttle and Brake Pedal
If your vehicle has this feature, you can change the
position of the throttle and brake pedals. This feature is
designed for shorter drivers, since the pedals cannot
move farther away from the standard position, but can
move closer for better pedal reach. This feature can
be programmed to work with the memory function
(if equipped) on your vehicle. SeeMemory Seat on
page 2-63.
The vehicle must be in PARK (P) for this feature
to operate.
The toggle switch used
to adjust the pedals
is located on the
steering column.
Press the switch towards you to move the pedals
closer. Press the switch away from you to move the
pedals away from you.
Engine Coolant Heater
Your vehicle has an engine coolant heater. In very cold
weather, 0°F (–18°C) or colder, the engine coolant
heater can help. You will get easier starting and better
fuel economy during engine warm-up. Usually, the
coolant heater should be plugged in a minimum
of four hours prior to starting your vehicle.
At temperatures above 32°F (0°C), use of the coolant
heater is not required.
2-27