2005 GMC ENVOY Owner's Manual

Shifting Out of Park (P)
Your vehicle has an automatic transmission shift lock
control system. You have to fully apply the regular
brakes before you can shift from PARK (P) when the
ignition is in RUN. SeeAutomatic Transmission
Operation on page 2-23.
Parking Over Things That Burn
{CAUTION:
Things that can burn could touch hot exhaust
parts under your vehicle and ignite. Do not
park over papers, leaves, dry grass or other
things that can burn.
2-33

Engine Exhaust
{CAUTION:
Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you cannot see or
smell. It can cause unconsciousness and death.
You might have exhaust coming in if:
Your exhaust system sounds strange
or different.
Your vehicle gets rusty underneath.
Your vehicle was damaged in a collision.
Your vehicle was damaged when driving
over high points on the road or over
road debris.
Repairs were not done correctly.
Your vehicle or exhaust system had been
modied improperly.
If you ever suspect exhaust is coming into
your vehicle:
Drive it only with all the windows down to
blow out any CO; and
Have your vehicle xed immediately.
Running Your Engine While
You Are Parked
It is better not to park with the engine running. But if
you ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust into
your vehicle. See the earlier caution under
Engine Exhaust on page 2-34.
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even
if the climate control fan is at the highest
setting. One place this can happen is a garage.
Exhaust — with CO — can come in easily.
NEVER park in a garage with the
engine running.
Another closed-in place can be a blizzard.
SeeWinter Driving on page 4-39.
2-34

{CAUTION:
It can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake rmly set. Your vehicle can roll.
Do not leave your vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle will not move, even when you are on
fairly level ground, always set your parking
brake and move the shift lever to PARK (P).
{CAUTION:
If you have four-wheel drive, your vehicle will
be free to roll — even if your shift lever is in
PARK (P) — if your transfer case is in
NEUTRAL. So be sure the transfer case is in a
drive gear — not in NEUTRAL. SeeFour-Wheel
Drive on page 2-26.
Follow the proper steps to be sure your vehicle will not
move. SeeShifting Into Park (P) on page 2-31.
If you are pulling a trailer, seeTowing a Trailer on
page 4-56.
2-35

Mirrors
Manual Rearview Mirror
While sitting in a comfortable driving position, adjust the
rearview mirror so you can see clearly behind your
vehicle. Grip the mirror in the center to move it up or
down and side to side. The day/night control, located at
the bottom of the mirror, adjusts the mirror to reduce
headlamp glare from behind during evening or dark
conditions. Turn the control clockwise for night
use; return it to the center for daytime use.
Manual Rearview Mirror
with OnStar
®
The vehicle may have a rearview mirror with the
OnStar®system.
Control buttons for the OnStar
®system are at the
bottom of the mirror. See your GM dealer for more
information on the OnStar
®system and how to
subscribe to OnStar®. Also, seeOnStar®System on
page 2-47for more information about the services
OnStar
®provides.
Mirror Operation
While sitting in a comfortable driving position, adjust the
rearview mirror so you can see clearly behind your
vehicle. Grip it in the center to move it up or down and
side to side. The day/night control, located at the
bottom of the mirror, adjusts the mirror to reduce
headlamp glare from behind during evening or dark
conditions. Move the control to the right for night
conditions. Return it to the center for daytime.
Manual Rearview Mirror
with Compass
The vehicle may have a manual rearview mirror with an
eight-point compass display located in the upper right.
Mirror Operation
While sitting in a comfortable position, adjust the rearview
mirror so you can see clearly behind your vehicle. Grip it
in the center and move it up or down and side to side.
The day/night control, located at the bottom of the mirror,
adjusts the mirror to reduce headlamp glare from behind
during evening or dark conditions. Push the control for
daytime use; pull it for night use.
2-36

Compass Display
O
(On/Off):Press this button to turn the compass on
or off. The compass display, can show a maximum
of two characters. For example, NE is displayed
for north-east.
When the ignition and the compass/temperature feature
are on, character boxes will appear for about
two seconds. After two seconds, the mirror will display
the direction the vehicle is facing.
Compass Calibration
When on, the compass automatically calibrates as the
vehicle is driven. If, after two seconds, the display
does not show a compass direction, (N for North, for
example), there may be a strong magnetic eld
interfering with the compass. Such interference may be
caused by a magnetic antenna mount, magnetic
note pad holder, or a similar magnetic item. If
the letter C should ever appear in the compass window,
the compass may need calibration.
Press and hold the on/off button for nine seconds to
activate the compass calibration mode. CAL will
be displayed in the compass window on the mirror.
The mirror can be calibrated by driving the vehicle in
circles at 5 mph (8 km/h) or less until the display shows
a direction.
2-37

Compass Variance
Compass variance is the difference between earth’s
magnetic north and true geographic north. The mirror is
set to zone eight upon leaving the factory. It will be
necessary to adjust the compass to compensate for
compass variance if you live outside zone eight. Under
certain conditions, such as during a long-distance,
cross-country trip, it will be necessary to adjust for
compass variance. If not adjusted to account for compass
variance, the compass could give false readings. To
adjust for compass variance do the following:
1. Find the current location and variance zone number
on the following zone map.
2. Press and hold the on/off button until a zone
number appears in the display.
3. Once a zone number appears in the display, press
the on/off button quickly until the correct zone
number appears in the display. If C appears in the
compass window, the compass may need
calibration. See “Compass Calibration”
explained previously.
2-38

Manual Rearview Mirror with
OnStar
®and Compass
The vehicle may have a manual rearview mirror with
OnStar®and an eight-point compass display located in
the upper right.
Control buttons for the OnStar
®system are at the
bottom of the mirror. See your GM dealer for more
information on the OnStar
®system. Also, seeOnStar®
System on page 2-47for more information about the
services OnStar®provides.
Mirror Operation
While sitting in a comfortable position, adjust the
rearview mirror so you can see clearly behind your
vehicle. Grip it in the center and move it up or down and
side to side. The day/night control, located at the
bottom of the mirror, adjusts the mirror to reduce
headlamp glare from behind during evening or dark
conditions. Push the control for daytime use; pull it for
night use.
Compass Display
O
(On/Off):Press this button to turn the compass on
or off. The compass display, can show a maximum
of two characters. For example, NE is displayed
for north-east.
When the ignition and the compass/temperature feature
are on, character boxes will appear for about
two seconds. After two seconds, the mirror will display
the direction the vehicle is facing.
Compass Calibration
When on, the compass automatically calibrates as the
vehicle is driven. If, after two seconds, the display
does not show a compass direction, (N for North, for
example), there may be a strong magnetic eld
interfering with the compass. Such interference may be
caused by a magnetic antenna mount, magnetic
note pad holder, or a similar magnetic item. If the
letter C should ever appear in the compass window,
the compass may need calibration.
Press and hold the on/off button for nine seconds to
activate the compass calibration mode. CAL will
be displayed in the compass window on the mirror.
The mirror can be calibrated by driving the vehicle in
circles at 5 mph (8 km/h) or less until the display shows
a direction.
2-39

Compass Variance
Compass variance is the difference between earth’s
magnetic north and true geographic north. The mirror is
set to zone eight upon leaving the factory. It will be
necessary to adjust the compass to compensate for
compass variance if you live outside zone eight. Under
certain conditions, such as during a long-distance,
cross-country trip, it will be necessary to adjust for
compass variance. If not adjusted to account for compass
variance, the compass could give false readings. To
adjust for compass variance do the following:
1. Find the current location and variance zone number
on the following zone map.
2. Press and hold the on/off button until a zone
number appears in the display.
3. Once a zone number appears in the display, press
the on/off button quickly until the correct zone
number appears in the display. If C appears in the
compass window, the compass may need
calibration. See “Compass Calibration” explained
previously.
2-40