2001 GMC JIMMY air conditioning

3-10
Rear Air Conditioning (Without Rear Heater)
(If Equipped)
Front Control
To increase and decrease the flow of cooled air to the
rear vents, turn the knob to the fan speed you want.
The knob has three speed positions. To increase the flow
of cooled air, turn the knob toward 3. To decrease the
flow of cooled air, turn it toward 1. To turn the fan off,
turn the knob to OFF.To operate the rear system using the front control, just
turn the knob to the fan position you want.Rear Control
To use the rear control, first turn the front control to
REAR. Then, the rear control can be used to increase
and decrease the airflow.

3-11
Rear Air Conditioning and Rear Heater
(If Equipped)
If your vehicle has the rear air conditioning and rear
heater system combination, controls are provided to
regulate temperature, location and fan speed.
Front Control
To adjust the airflow speed, turn the fan knob located on
the left side to the desired setting.
To activate the second seat control system, turn the fan
knob on the front overhead control to REAR.To regulate the airflow location, adjust the right knob on
the control panel. Turn the knob clockwise for floor vent
airflow or counterclockwise for headliner vent airflow.
Generally, the instrument panel outlets are used for air
conditioning and the floor vents for heating. The knob
can be set to any blend setting.
To adjust the air temperature, turn the temperature knob
on the center of the control panel.
For warmer air, turn the knob clockwise toward red. For
cooler air, turn the knob counterclockwise toward blue.
Rear Control
The rear control works just like the front control. It
allows second seat passengers to adjust the controls as
they desire. To use the rear control, first turn the knob
on the front control panel to REAR.

3-12 Rear Air Conditioning and Heating
Systems with Electronic Climate Control
System (If Equipped)
Front Control
Rear ControlWith this system the rear passengers can control the
temperature of the air flow for the rear seating area. The
climate control has three controls.
To adjust the airflow speed, turn the fan knob located on
the left side of the control panel.
The system also has a front AUTO setting that can
automatically change the temperature of the rear seating
area based on information from the front control. An
OFF setting, located on the front climate control panel,
also allows the driver to turn off the rear passenger seat
controls from the front seat.
To adjust the air temperature, turn the temperature knob
on the center of the control panel clockwise toward
82
F (28
C) for warmer air. Turn the knob
counterclockwise toward 66
F (19
C) for cooler air.
To regulate the airflow location, adjust the right knob
on the control panel. Turn the knob clockwise for floor
outlets airflow or counterclockwise for headliner vent
airflow. Generally, the instrument panel outlets are used
for air conditioning and the floor vents for heating. The
knob can be set to any blend setting.

3-13 Air Conditioning
On hot days, open the windows long enough to let hot
air inside escape. This reduces the time it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
The A/C button, below the mode knob, allows the air
coming into your vehicle to be cooled. This setting is
useful for normal cooling on hot days.
The recirculation button allows the air inside your
vehicle to be recirculated. This setting helps to
maximize your air conditioner's performance and your
vehicle's fuel economy. This setting also cools air the
fastest and can be used to keep unwanted odors and/or
dust from entering the vehicle. When using the air
conditioner, turn off the recirculation button after the
vehicle reaches a comfortable interior temperature.
When the right knob on the control panel is between
floor and defrost, the recirculation feature will not
function to reduce window fogging.When you use A/C with the recirculation button pushed
in, turn off recirculation as soon as the vehicle reaches a
comfortable interior temperature.
Maximum air conditioning performance is obtained by
pressing the A/C button, the recirculation button and
turning the temperature knob fully counterclockwise to
the blue area. This setting also cools air the fastest. After
the vehicle's interior reaches a comfortable temperature,
press the outside air button to place the air conditioning
system in the normal mode.
Passenger Compartment Air Filter (If Equipped)
If your vehicle has air conditioning, it is equipped with
a passenger compartment air filter, which filters outside
air entering the vehicle. For information on replacing
the filter see ªPassenger Compartment Air Filterº in
the Index.

3-15
The defogger will shut itself off after several minutes. If
you need additional warming time, press the button
again. You can turn the defogger off at any time by
pressing the button.
If your vehicle is equipped with heated outside mirrors,
the rear window defogger button will also activate the
heated outside mirrors.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid on the rear window.
NOTICE:
Don't use a razor blade or something else sharp
on the inside of the rear window. If you do, you
could cut or damage the warming grid, and the
repairs wouldn't be covered by your warranty.
Ventilation System
For mild outside temperatures when little heating or
cooling is needed, use the vent setting to direct outside
air through your vehicle.
Your vehicle's ventilation system supplies outside air
to the inside of your vehicle when it is moving. With
the side windows closed, air will flow into the front
air inlet grilles, through the vehicle, and out the air
exhaust valves.
Outside air will also enter the vehicle when the heater or
the air conditioning fan is running, unless you have the
recirculation button pushed in. For more information on
the recirculation button, see ªAir Conditioningº earlier
in this section.

3-16
Your vehicle has air
outlets in the center and
on the sides of your
instrument panel.
You can turn the outlets from side
-to-side or up and
down to direct the flow of air. The left driver and
passenger outlets on vehicles equipped with air
conditioning have shut off knobs. Turn the knob to the
left to shut off air flow or to the right to allow air flow.
When you close an outlet, it will increase the flow of air
coming out of any outlets that are open. The center
outlet does not completely shut off airflow.Ventilation Tips

Keep the hood and front air inlet free of ice, snow or
any other obstruction (such as leaves). The heater
and defroster will work far better, reducing the
chance of fogging the inside of your windows.

When you enter a vehicle in cold weather, turn the
fan knob all the way to the right for a few moments
before driving. This helps clear the intake ducts of
snow and moisture, and reduces the chance of
fogging the inside of your windows.

Keep the air path under the front seats clear
of objects. This helps air to circulate throughout
your vehicle.

The use of hood air deflectors may adversely
affect the performance of the heating and air
conditioning system.

6-76
Fuse Usage
ATC Automatic Transfer Case
RR DEFOG Rear Window Defogger, Heated
Mirrors (Relay)
RTD Autoride
(Real Time Damping)
RR PRK Right Rear Parking Lamps
ECM B PCM
F/PMP Fuel Pump (Relay)
O2 A Oxygen Sensors
O2 B Oxygen Sensors
LR PRK Left Rear Parking Lamps
RR DEFOG Rear Window Defogger,
Heated Mirrors
HDLP Headlamps (Relay)
TRL PRK Parking Lamps Trailer Wiring
PRIME Not Used
RT HDLP Right Headlamps
DRL Daytime Running Lamps (Relay)
HTD MIR Heated MirrorsFuse Usage
LT HDLP Left Headlamps
A/C Air Conditioning
AUX PWR Cigarette Lighter, Auxiliary
Power Outlets
SEO 2 Special Equipment Option Power,
Power Seats, Aux Roof Mnt Lamp
SEO 1 Special Equipment Option
Power, Aux Roof Mnt Lamp,
Cell Phone, OnStar


DRL Daytime Running Lamps
A/C A/C (Relay)
FOG LP Fog Lamps
FOG LP Fog Lamps (Relay)
RADIO Audio System, Instrument Cluster,
Climate Control System
CIGAR Cigarette Lighter, Auxiliary
Power Outlets
RT TURN Right Turn Signals
BTSI Automatic Transmission Shift
Lock Control System

6-80 Engine Oil with Filter Capacity
After refill, the level must be rechecked. Add enough
engine oil so that the fluid is within the proper operating
range. See ªEngine Oilº in the Index.
Engine VIN
Quantity with Filter

VORTEC 4800 V8 V 6.0 quarts (5.7 L)
VORTEC 5300 V8 T 6.0 quarts (5.7 L)
VORTEC 6000 V8 U 6.0 quarts (5.7 L)
VORTEC 8100 V8 G 6.5 quarts (6.1 L)

Oil filter should be changed at every oil change.
Fuel Tank Capacity
Type Quantity
Tahoe/Yukon 26.0 U.S. gallons (98.4 L)
Suburban/Yukon
XL (1500 Series)31.0 U.S. gallons (117.3L)
Suburban/Yukon
XL (2500 Series)38.5 U.S. gallons (145.7 L)
Air Conditioning
Refrigerant Capacity
If you do your own service work, you'll need the proper
service manual. See ªDoing Your Own Service Workº in
the Index for additional information. It is recommended
that service work on your air conditioning system be
performed by a qualified technician.
Air Conditioning Refrigerant Systems
Tahoe/Yukon 2.71 lbs (1.23 kg). . . . . . . . . . . . . . . .
Suburban/Yukon XL 3.0 lbs (1.36 kg). . . . . . . . . . .
Use Refrigerant Oil, R134a Systems