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Torque Lock
If you are parking on a hill and you do not shift
your transmission into PARK (P) properly,
the weight of the vehicle may put too much force
on the parking pawl in the transmission. You
may nd it difficult to pull the shift lever out
of PARK (P). This is called torque lock. To prevent
torque lock, set the parking brake and then shift
into PARK (P) properly before you leave the
driver’s seat. To nd out how, seeShifting Into
Park (P) on page 152.
When you are ready to drive, move the shift lever
out of PARK (P) before you release the parking
brake.
If torque lock does occur, you may need to have
another vehicle push yours a little uphill to
take some of the pressure from the parking pawl
in the transmission, then you will be able to
pull the shift lever out of PARK (P).
Shifting Out of Park (P)
Your vehicle has an automatic transmission shift
lock control system which locks the shift lever
in PARK (P) when the ignition is in the LOCK.
You have to fully apply your regular brakes before
you can shift from PARK (P) when the ignition
is in RUN. SeeAutomatic Transmission Operation
on page 144.
If you cannot shift out of PARK (P), ease pressure
on the shift lever and push the shift lever all the
way up into PARK (P) as you maintain brake
application. Then, move the shift lever into
the desired gear.
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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.
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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.
CAUTION: (Continued)
CAUTION: (Continued)
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 has
been modi ed 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.
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Running the Engine While 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
underEngine Exhaust on page 155.
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 364.
{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).
Follow the proper steps to be sure your vehicle
will not move. SeeShifting Into Park (P) on
page 152.
If you are pulling a trailer, seeTowing a Trailer on
page 379.
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Mirrors
Automatic Dimming Rearview Mirror
with Intellibeam™, OnStar
®,
Compass, and Temperature Display
Your vehicle may have an automatic dimming
rearview mirror with Intellibeam, OnStar®, compass
and temperature display. For more information
on OnStar
®, seeOnStar®System on page 165.
For more information on Intellibeam™, see
“Intellibeam Intelligent High-Beam Headlamp
Control System” underExterior Lamps on
page 205.
The mirror includes an eight-point compass
display in the upper right corner of the mirror face.
When on, the compass automatically calibrates
as the vehicle is driven. Outside temperature
is also shown in the display.
Automatic Dimming
Your vehicle is equipped with an inside automatic
dimming rearview mirror. The automatic dimming
feature is activated whenever the vehicle is turned
on and dims only during nighttime driving.
Compass Operation
AUTO3:Press and hold the “auto highbeam”
button for approximately three seconds to turn
the compass/temperature display on or off.
When the ignition and the display features are on,
the display will show two character boxes for
about two seconds. After two seconds, the mirror
will display the compass heading and temperature.
Compass Calibration
If after two seconds the display does not show the
correct 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.
The compass can be placed in calibration mode
manually by pressing and holding the “auto
highbeam” button for approximately nine seconds
until CAL is shown in the compass display.
The mirror can then be calibrated by driving the
vehicle in circles at 5 mph (8 km/h) or less until the
display reads the correct direction.
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Compass Variance
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 the
vehicle is driven outside zone eight. Under certain
circumstances, such as a long distance,
cross-country trip, it will be necessary to adjust the
compass variance.
Compass variance is the difference between
earth’s magnetic north and true geographic north.
If the mirror is not adjusted to account for zone
changes, the compass could give false readings.
To adjust for zone changes, do the following:
1. Find your current location and variance zone
number on the zone map that follows.
2. Press and hold the “auto highbeam” button
approximately six seconds until a zone
number appears in the display.
3. Once the zone number appears in the display,
press the “auto highbeam” button quickly until
you reach the correct zone number. Stop
pressing the button and the mirror will return to
normal operation. If C appears in the compass
window, the compass needs calibration. See
“Compass Calibration” listed previously.
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