4WD GMC JIMMY 2001 Owner's Manual

2-35
You can choose among four driving settings:
2HI: This setting is used for driving in most street
and highway situations. Your front axle is not engaged
in two
-wheel drive. This setting also provides the best
fuel economy.AUTO 4WD: This setting is ideal for use when road
conditions are variable. When driving your vehicle in
AUTO 4WD, the front axle is engaged, but the vehicle's
power is sent only to the rear wheels. When the vehicle
senses a loss of traction, the system will automatically
engage four
-wheel drive. Driving in this mode results
in slightly lower fuel economy than 2HI.
4HI: Use 4HI when you need extra traction, such as
on snowy or icy roads or in most off
-road situations.
This setting also engages your front axle to help drive
your vehicle. This is the best setting to use when
plowing snow.
4LO: This setting also engages your front axle and
delivers extra torque. You may never need 4LO. It sends
maximum power to all four wheels. You might choose
4LO if you are driving off
-road in deep sand, deep mud,
deep snow and climbing or descending steep hills.

2-36
CAUTION:
Shifting the transfer case to NEUTRAL can
cause your vehicle to roll even if the transmission
is in PARK (P). You or someone else could be
seriously injured. Be sure to set the parking
brake before placing the transfer case in
NEUTRAL. See ªParking Brakeº in the Index.
NEUTRAL: Shift the vehicle's transfer case to
NEUTRAL only when towing your vehicle. See
ªRecreational Vehicle Towingº or ªTowing Your
Vehicleº in the Index for more information.
Indicator lights in the switches show 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 to your dealer for
service. An indicator light will flash while shifting the
transfer case. It will remain illuminated when the shift is
complete. If for some reason the transfer case cannot make
a requested shift, it will return to the last chosen setting.
If the SERVICE 4WD light stays on, you should take
your vehicle to your dealer for service. See ªService
4WDº in the Index for further information.Shifting into 4HI or AUTO 4WD
Press and release the 4HI or AUTO 4WD switch. This
can be done at any speed (except when shifting from
4LO), and the indicator light will flash while shifting.
It will remain illuminated when the shift is completed.
Shifting into 2HI
Press and release the 2HI switch. This can be done at
any speed (except when shifting from 4LO).
Shifting into 4LO
To shift to 4LO, the ignition must be in RUN and the
vehicle must be stopped or moving less than 3 mph
(4.8 km/h) with the transmission in NEUTRAL (N). The
preferred method for shifting into 4LO is to have your
vehicle moving 1 to 2 mph (1.6 to 3.2 km/h). Press and
release the 4LO switch. You must wait for the 4LO
indicator light to stop flashing and remain illuminated
before shifting your transmission in gear.
If the 4LO 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 less than 3 mph (4.8 km/h) and the
transmission is in NEUTRAL (N). After 30 seconds the
transfer case will return to the setting last chosen.

2-37
Shifting Out of 4LO
To shift from 4LO to 4HI, AUTO 4WD or 2HI your
vehicle must be stopped or moving less than 3 mph
(4.8 km/h) with the transmission in NEUTRAL (N) and
the ignition in RUN. The preferred method for shifting
out of 4LO is to have your vehicle moving 1 to 2 mph
(1.6 to 3.2 km/h). Press and release the 4HI, AUTO
4WD or 2HI switch. You must wait for the 4HI, AUTO
4WD or 2HI indicator light to stop flashing and remain
illuminated before shifting your transmission into gear.
If the 4HI, AUTO 4WD or 2HI switch is pressed when
your vehicle is in gear and/or moving, the 4HI, AUTO
4WD or 2HI indicator light will flash for 30 seconds but
will not complete the shift unless your vehicle is moving
less than 3 mph (4.8 km/h) and the transmission is
in NEUTRAL (N).
Shifting into NEUTRAL
To shift the transfer case to NEUTRAL do
the following:
1. Make sure the vehicle is parked so that it will
not roll:2. Set the parking brake.
3. Start the vehicle or turn the ignition to RUN.
4. Connect the vehicle to the towing vehicle.
5. Put the transmission in NEUTRAL (N).
6. Shift the transfer case to 2HI.
7. Simultaneously press and hold the 2HI and 4LO
buttons for 10 seconds. The red NEUTRAL light
will come on when the transfer case shift to
NEUTRAL is complete.
8. Shift the transmission to REVERSE (R) for
one second, then shift the transmission to
DRIVE (D) for one second.
9. Turn the ignition to OFF.
10. Place the transmission shift lever in PARK (P).
11. Release the parking brake prior to towing.

2-38
Shifting Out of NEUTRAL
To shift out of NEUTRAL:
1. Set the parking brake and apply the regular
brake pedal.
2. Shift the transmission to NEUTRAL (N) and turn the
ignition to RUN with the engine off.
3. Press the button for the desired transfer case shift
position (2HI, 4HI, AUTO 4WD or 4LO).
4. After the transfer case has shifted out of NEUTRAL
the red light will go out.
5. You may start the engine and shift the transmission
to the desired position.
Horn
To sound the horn, press the center pad on the
steering wheel.
Tilt Wheel
A tilt wheel allows you to adjust the steering wheel
before you drive. You can raise it to the highest level
to give your legs more room when you exit and enter
your vehicle.
The tilt steering wheel lever
is located on the lower left
side of the column.
To tilt the wheel, hold the steering wheel and pull the
lever. Then move the steering wheel to a comfortable
position and release the lever to lock the wheel in place.

2-93 Change Engine Oil
This message is displayed
when the engine oil needs
to be changed. The message
is only displayed for
15 seconds at the start
of each ignition cycle.
When you change the engine oil, be sure to reset the
Engine Oil Life System. See ªEngine Oil, When to
Changeº in the Index.
Security
This message is displayed
when the content
theft
-deterrent system
(if equipped) has been
activated and also monitors
the Passlock

System.
If the security message is displayed continuously while
driving and stays on, there may be a problem with the
Passlock System. Your vehicle will not be protected by
Passlock, and you should contact your GM dealer.
Service 4WD (If Equipped)
If the SERVICE 4WD
message comes on, there
may be a problem with the
automatic transfer case and
service is required.
Malfunctions can be indicated by the system before
any problem is apparent, which may prevent serious
damage to the vehicle. This system is also designed to
assist your service technician in correctly diagnosing
a malfunction.
Low Washer Fluid
This message is displayed
when the vehicle is low on
windshield washer fluid.
The message is only
displayed for 15 seconds
at the start of each
ignition cycle.
For more information, see ªWindshield Washer Fluidº in
the Index.

4-60
K-1500 (4WD)*
Engine Axle Ratio Max. Trailer Wt. GCWR
4800 V8 3.73 6,600 lbs. (2 996 kg) 12,000 lbs. (5 448 kg)
4.10 7,600 lbs. (3 450 kg) 13,000 lbs. (5 902 kg)
5300 V8 3.73 7,600 lbs. (3 450 kg) 13,000 lbs. (5 902 kg)
4.10 8,200 lbs. (3 722 kg) 14,000 lbs. (6 356 kg)
5300 V8 (Suburban/Yukon XL) 3.73 7,500 lbs. (3 405 kg) 13,000 lbs. (5 902 kg)
4.10 8,500 lbs. (3 859 kg) 14,000 lbs. (6 356 kg)
5300 V8 (BPH package) 3.73 7,300 lbs. (3 314 kg) 13 000 lbs. (5 902 kg)
4.10 8,200 lbs. (3 722 kg) 14,000 lbs. (6 356 kg)
5300 V8 (Suburban BPH package) 3.73 7,000 lbs. (3 178 kg) 13 000 lbs. (5 902 kg)
4.10 7,800 lbs. (3 722 kg) 14,000 lbs. (3 541 kg)
* Weight
-distributing hitch tongue weight 10 percent to 15 percent of trailer weight 1,200 lbs. (544 kg) maximum.

4-61
C-2500 (2WD)*
Engine Axle Ratio Max. Trailer Wt. GCWR**
6000 V8 (Suburban/Yukon XL)
3.73 8,200 lbs. (3 722 kg) 14,000 lbs. (6 356 kg)
4.10 10,200 lbs. (4 630 kg) 16,000 lbs. (7 264 kg)**
8100 V8 3.73 10,500 lbs. (4 767 kg) 17,000 lbs. (7 718 kg)
(Suburban/Yukon XL)
4.10 12,000 lbs. (5 443 kg) 14,000 lbs. (8 626 kg)
* Weight
-distributing hitch tongue weight 10 percent to 15 percent of trailer weight 1,500 lbs. (681 kg) maximum.
**GCWR limited to 14,000 lbs. (6 356 kg) on vehicles with Z83 suspension.

2500 Suburban/Yukon XL (2WD) equipped with Z83 base suspension limited to 8,200 lbs. (3 722 kg) trailer.
K
-2500 (4WD)*
Engine Axle Ratio Max. Trailer Wt. GCWR
6000 V8 (Suburban/Yukon XL)
3.73 7,900 lbs. (3 586 kg) 14,000 lbs. (6 356 kg)
4.10 9,900 lbs. (4 494 kg) 16,000 lbs. (7 264 kg)**
8100 V8 3.73 10,500 lbs. (4 585 kg) 17,000 lbs. (7 718 kg)
4.10 12,000 lbs. (5 448 kg) 19,000 lbs. (8 626 kg)
* Weight
-distributing hitch tongue weight 10 percent to 15 percent of trailer weight 1,500 lbs. (681 kg) maximum.
**GCWR limited to 14,000 lbs. (6 356 kg) on vehicles with Z83 suspension.

2500 Suburban/Yukon XL (4WD) equipped with Z83 base suspension limited to 7,900 lbs. (3 586 kg) trailer.

6-71
Fuse Usage
HTR A/C Climate Control System
IGN 0 PRND321 Display,
Odometer, PCM
CRUISE Cruise Control, Instrument Cluster
4WD Four
-Wheel Drive System,
Auxiliary Battery
TURN Exterior Lamps, Turn Signals,
Hazard Lamps
RR WIPER Rear Window Wiper
WS WPR Windshield Wipers
SEO IGN Special Equipment Option,
Ignition, OnStar


ILLUM Interior Lamps
IGN 1 Ignition, Instrument Panel
SEO ACCY Special Equipment Option
Accessory, Cellular Telephone
L BODY Retained Accessory Power Relay
CRANK Starting SystemFuse Usage
AIR BAG Air Bag
MIR/LOCK Power Mirrors, Power Door Locks
SEAT Power Seat Circuit Breaker
DR LOCK Power Door Locks
RAP #1 Retained Accessory Power Relay
LOCK Power Door Locks
INT PRK Interior Lamps
UNLOCK Power Door Locks
DRV UNLOCK Power Door Lock Relay
L DOOR Power Door Lock Relay
PWR WDO Power Window Circuit Breaker
RDO I Audio System, OnStar

RAP #2 Rear Power Windows, Sunroof,
Radio, OnStar

LOCK Power Door Lock Relay
UNLOCK Power Door Lock Relay