1997 GMC JIMMY automatic transmission

To shift into or out of 4LO:
1. The vehicle must be moving less than 3 mph
(4.8 km/h) with the transmission in NEUTRAL (N)
for an automatic transmission. For a manual
transmission, the clutch pedal must be engaged.
The preferred method
for shifting into or out of 4LO
is to have your vehicle moving I to 2 tnph (I .6 to
3.2 km/h).
2. Press the transfer case shift button and shift in one
continuous motion.
Don’t pause
in N SET PARK BRAKE as you shift into
or out of
4L0, or your gears could clash.
Remember that driving
in 4HI or 4LO may reduce fuel
economy. Also, driving in four-wheel drive on dry
pavement could cause your tires to wear faster and
make your transfer case harder to
shift and reduce
powertrain longevity.
Electronic Transfer Case (If Equipped)
If your four-wheel-drive
vehicle has the electronic
transfer case, the transfer
case switches are above
the radio controls.
Use these switches to shift into and out
of four-wheel
drive.
You can choose among three driving settings:
2HI: This setting is for driving in most street and
highway situations. Your front axle is not engaged
in
two-wheel drive. When this lamp is lit, it is about
one-half
as bright as the others.
4HI: This setting engages your front axle to help drive
your vehicle. Use
4HI when you need extra traction, such
as on snowy or icy roads. 01- in most off-road situations.
2-26

4LO: This setting also engages your front axle to give
you extra traction. You may never need 4LO. It sends
the maximum power to all
four wheels. You might
choose 4LO
if you were driving off-road in sand, mud
or deep snow and climbing or descending steep hills.
Indicator lights
in the switches show you which setting
you are
in. The indicator lights will come on briefly when
you turn on
the ignition and one will stay on. If the lights
do not come
on, you should take your vehicle in for
service.
An indicator light will flash while shifting. It will
remain illuminated when the shift is completed.
Shifting from 2HI to 4HI
Press and release the 4HI switch. This can be done at
any speed. and the front axle will lock automatically.
Shifting from 4HI to 2HI
Press and release the 2HI switch. This can be done at
any speed. and the. front axle will unlock automatically.
Shifting from 2HI or 4HI to 4LO
To
shift from 2HI or .CHI to 4LO. the vehicle must be
stopped or moving less than
3 rnph (4.8 k~nh) with the
transmission
in NEUTRAL (N) in vehicles equipped with an
automatic transmission or the clutch pedal engaged
in
vehicles equipped with a manual transmission. The
preferred method for shifting into 4LO is to have your
vehicle moving
1 to 2 mph (I .6 to 3.2 kmh). Press
and release
the 4LO switch. You must wait for the
4LO indicator light to stop flashing and remain
illuminated before shifting your transmission into
gear or releasing
the clutch pedal.
If the 4L0 switch is pressed when your vehicle is
in
gear and/or moving, the 4LO indicator light will flash
for
30 seconds and not complete the shift unless your
vehicle is moving slower than
3 tnph (4.8 km/h) and
the transmission
is in NEUTRAL (N) or the clutch
pedal engaged.
On automatic transmission equipped vehicles,
if your
transfer case does
not shift into 4LO. your transmission
indicator switch may reyuire adjustment. With
your
transmission in NEUTRAL (N)! press and release the
4L0 switch. While the 4LO indicator light is flashing.
shift yo~lr transmission into PARK (P). Wait unlil the
4L0 indicator light remains illuminated before shifting
your trrmstnission
into gear. This will get you into 4LO.
but you should take
your vehicle in for service to restore
normal operation.

Shifting from 4LO to 4HI or 2HI
To shift from 4LO to 4HI or 2H1, your vehicle must be
stopped or moving
less than 3 mph (4.8 kndh) with the
transnJission
in NEUTRAL (N) or the clutch pedal
engaged. The preferred method for shifting out of
4LO is to have your vehicle moving
1 to 2 mph (1.6 to
3.2 kdh). Press and release the 4HI switch. You must
wait for the
4HI indicator light to stop flashing and
remain illuminated before shifting your transmission
into gear
or releasing the clutch pedal.
If the 4Hi switch is pressed when your vehicle is in gear
and/or moving. the 4HI indicator light
will flash for
30 seconds but not complete the shift unless the
vehicle is moving slower than
3 nlph (4.8 km/h) and
the transmission is in NEUTRAL (N) or the clutch
pedal engaged.
On automatic transmission equipped vehicles. if your
transfer case does not
shift into 4H1, your transmission
indicator switch
may require adjustment. With your
transmission
in NEUTRAL (N), press and release the
4HI switch. While the 4HI indicator light is flashing,
shift your transmission into PARK
(P). Wait until the
4HI indicator light remains illuminated before shifting
your transmission into gear. This
will get you into 4H1,
but you should take your vehicle in for service to restore
norrnal operation.
2-2s

Shifting Into PARK (P) (Automatic
Transmission
Models Only)
It can be dangerous to get out of your vehicle if
the shift lever
is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
If you have left the engine running, the vehicle can
move suddenly. You or others could be injured.
To be sure your vehicle won’t move, even when
you’re on fairly level ground, use the steps that
follow. If you have four-wheel drive with a manual
transfer case shift
lever and your transfer case is
in NEUTRAL (N), your vehicle will be free to roll,
even if your shift lever is in PARK (P). So, be sure
the transfer case is in
a drive gear -- not in
NEUTRAL
(N). If you’re pulling a trailer, see
“Towing a Trailer” in the Index.
Column Shift Lever
1. Hold the brake pedal down with your right foot and
set the parking brakc.
2. Move the shift lever into PARK (P) position like this:
2-30

Leaving Your Vehicle With the Engine
Running (Automatic Transmission
Models Only)
It can be dangerous to leave your vehicle with the
engine running. Your vehicle could move suddenlJ
if the shift lever
is not fully in PARK (P) with the
parking brake firmly set. If you have four-wheel
drive with
a manual transfer case shift lever and
your transfer case
is in NEUTRAL (N), your
vehicle will
be free to roll, even if your shift lever
is in
PARK (P). So be sure the transfer case is in a
drive gear
-- not in NEUTRAL (N). And, if you
leave the vehicle with the engine running, it could
overheat and even catch fire. You or others could
be injured. Don't leave
your vehicle with the
engine running unless you have to.
If you have to leave your vehicle with the engine
running, be sure your vehicle
is in PARK (P) and yo~~r parking brake
is firmly set before you leave
it. After
you've moved the shift lever into the PARK
(P)
position, hold the regular brake pedal down. Then, see
if you can move the shift lever away from PARK (P)
without first pulling it toward you (or pressing the
button on
a console shift lever). If YOLI can, it means that
the shift lever wasn't fully locked
into PARK (P).
Torque Lock (Automatic Transmission)
If you are parking on a hill and you don't 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 find it difficult to pull the shift
lever out
of PARK (P). This is called "torque lock." To
prevent torque lock, set the parking br'ke and then shift
into PARK
(P) properly before you leave the driver's seat.
To find out how, see "Shifting Into PARK (P)" in
the Index.
When
you are ready to drive, move the shift lever out of
PARK (P) kc$~w 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, so
~OLI can pull the shift lever out of PARK (P).
2-32

Shifting Out of PARK (P)
(Automatic Transmission)
Your vehicle has a brake-transmission shift interlock.
YOLI have to fully apply your regular brake before you
can shift
from PARK (PI when the ignition is in the
RUN position. See "Automatic Transmission Operation"
in the Index.
If you cannot shift out of PARK (P)? ease pressure on
the shift lever
-- push the shift lever all the way into
PARK (P) as you maintain brake application. Then
move the shift lever into the gear you want (you must
press the shift lever button
if you have the console
shift lever).
If you ever hold the brake pedal down but still can't
shift out
of PARK (P)? try this:
1. Turn the key to OFF.
2. Apply and hold the brake until the end of Step 3.
3. Shift to NEUTRAL (N).
4. Start the vehicle and then shift to the drive gear
you want.
5. Have the vehicle fixed as soon as you can.
Parking Your Vehicle (Manual
Transmission Models Only)
Before you get out of your vehicle, turn off your engine,
put your- manual transmission in REVERSE (R) and
firmly apply the parking brake.
If you have four-wheel drive with it manual transfer case
shift lever, be sure your transfer case is in a drive gear.
Your vehicle could roll
if it isn't.
If you are parking on a hill. or if your vehicle is pulling
a trailer, see "Towing a Trailer" in the Index.
2-33

Running Your Engine While You’re
Parked (Automatic Transmission)
It’s better not to park with the engine running. But if
ever have to, here are some things to know.
Idling the engine with the air system control
off could allow dangerous exhaust into
your vehicle (see the earlier Caution under
“Engine Exhaust”).
Also, idling in a closed-in place can let deadly
carbon monoxide
(CO) into your vehicle even if
the fan switch 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.
l (See “Blizzard” in the Index.)
I-
It can be dangerous to get out of your vehicle if
the shift lever is not fully in
PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don’t leave your vehicle when the engine is running unless you have to.
If you’ve left the
engine running, the vehicle can move suddenly.
You or others could be injured.
To be sure your
vehicle won’t move, even when you’re on fairly
level ground, always set your parking brake and
move the shift lever to
PARK (P).
If you have four-wheel drive with a manual transfer case
shift lever and your transfer case is in NEUTRAL
(N),
your vehicle will be free to roll, even if your shift lever
is in
PARK (P). So, be sure the transfer case is in a drive
gear
-- not in NEUTRAL (N). Always set your parking
brake. Follow the proper steps
to be sure your vehicle
won’t move. See “Shifting Into
PARK (P)” in the Index.
If you’re pulling a trailer, see “Towing a Trailer” in
the Index.
2-35

Cruise Control (If Equipped)
With cruise control, you can
maintain
a speed of about
25 mph (40 krn/h) or more
without keeping your foot
on the accelerator. This
can
really help on long trips.
Cruise control
does not
work at speeds below about
25 rnph (40 km/h).
If you have an automatic transmission and you apply
your brakes, the cruise control will shut
off.
If you have a manual transmission and you apply your
brakes or push the clutch pedal, the cruise control
will
shut off.
A CAUi ION:
I
Cruise control can be dangerous where you
can’t drive safely at
a steady speed. So,
don‘t use your cruise control on winding
roads or in heavy traffic.
slippery roads. On such roads, fast changes
in tire traction can cause needless wheel
spinning, and you could lose control. Don’t
use cruise control on slippery roads.
Cruise control can be dangerous on