air conditioning GMC SAVANA 2020 Owner's Manual

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Introduction 3
{Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
{Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means“Do
not,” “Do not do this,” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M: Shown when the owner ’s
manual has additional instructions
or information.
*: Shown when the service
manual has additional instructions
or information.
0: Shown when there is more
information on another page —
“see page.” Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. See the
features in this manual for
information.
u:
Air Conditioning System
G: Air Conditioning Refrigerant Oil
9:Airbag Readiness Light
!: Antilock Brake System (ABS)
$:Brake System Warning Light
9:Dispose of Used Components
Properly
P: Do Not Apply High Pressure
Water
B: Engine Coolant Temperature
_: Flame/Fire Prohibited
H:Flammable
[:Forward Collision Alert

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
12 Keys, Doors, and Windows
3. Insert the new battery, positiveside facing down. Replace with
a CR2032 or equivalent
battery.
4. Snap the transmitter back together.
Remote Vehicle Start
This vehicle may have a remote
start feature. This feature allows you
to start the engine from outside the
vehicle. It may also start the
vehicle's heating or air conditioning
systems. See Climate Control
Systems 0143.
Laws in some local communities
may restrict the use of remote
starters. For example, some laws
may require a person using remote
start to have the vehicle in view
when doing so. Check local
regulations for any requirements on
remote starting of vehicles.
Do not use the remote start feature
if the vehicle is low on fuel. The
vehicle may run out of fuel.
The RKE transmitter range may be
less while the vehicle is running. Other conditions can affect the
performance of the transmitter, see
Remote Keyless Entry (RKE)
System
09.
/:This button will be on the RKE
transmitter if the vehicle has remote
start.
To start the engine using the remote
start feature:
1. Aim the RKE transmitter at the vehicle.
2. Press and release
Qon the
transmitter.
3. Immediately press and hold
/
until the turn signal lamps
flash. If you cannot see the
lamps, press and hold
/for at
least four seconds.
When the engine starts, the
parking lamps will turn on and
remain on while the engine is
running. The doors will be
locked.
The engine will continue to run
for 10 minutes. After
30 seconds, repeat the steps if a 10-minute extension is
desired. Remote start can be
extended only once.
After entering the vehicle during a
remote start, turn the ignition on to
drive the vehicle.
A maximum of two remote starts or
a start with an extension are
allowed between ignition cycles.
If the remote start procedure is used
again before the first 10-minute time
frame has ended, the first
10 minutes will immediately expire
and the second 10-minute time
frame will start.
After the engine has been remote
started two times, or a remote start
with an extension, the ignition must
be turned on and then off before the
remote start procedure can be used
again.
To cancel a remote start do any of
the following:
. Aim the RKE transmitter at the
vehicle and press
/until the
parking lamps turn off.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Climate Controls 143
Climate Controls
Climate Control Systems
Climate Control Systems . . . . . 143
Rear Heating System . . . . . . . . . 145
Rear Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 146
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 148
Maintenance
Service . . . . . . . . . . . . . . . . . . . . . . . 148
Climate Control Systems
The heating, cooling, and ventilation for the vehicle can be controlled with
this system.
Vehicles without Air Conditioning
1. Fan Control
2. Temperature Control
3. Air Delivery Mode Control
9: Turn the knob clockwise or
counterclockwise to increase or
decrease the fan speed.
9: Turns the system off. Temperature Control :
Turn the
knob clockwise or counterclockwise
to increase or decrease the
temperature inside the vehicle.
Air Delivery Mode Control : Turn
the knob clockwise or
counterclockwise to change the
current airflow mode.H: Air is directed to the instrument
panel outlets.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
144 Climate Controls
):Air is divided between the
instrument panel and floor outlets,
with some air directed toward the
windshield.
6: Air is directed to the floor
outlets with some air directed to the
windshield and side windows.
-: This mode clears the windows
of fog or moisture. Outside air is
directed to the floor and defroster
outlets. Adjust the temperature knob
for warmer or cooler air. The air
conditioning compressor might turn
on in this setting to dehumidify
the air.
1: This mode clears the
windshield of fog or frost more
quickly. Air is directed to the
windshield, with some to the floor
outlets and front side windows. The
air conditioning compressor might
turn on in this setting to dehumidify
the air.
Do not drive the vehicle until all the
windows are clear.
Vehicles with Air Conditioning
1. Fan Control
2. Temperature Control
3. Air Delivery Mode Control
4. Rear Window Defogger (If Equipped)
On hot days, open the windows to
let hot inside air escape; then close
them. This helps to reduce the time
needed for the vehicle to cool down
and the system operates more
efficiently.
#: Cools and dehumidifies the air
inside of the vehicle.
V: Cools the air inside the vehicle
faster, by recirculating the inside air.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
146 Climate Controls
R:This position supplies the least
amount of heat to the rear
seating area.
9: This turns the rear heating
system off.
Rear Climate Control
System
If equipped with a rear heating and
air conditioning system, it controls
the temperature, fan speed, and air
delivery for the rear seat
passengers only. The front climate
control panel is in the overhead
console between the driver and
front passenger.
Front Climate Control Panel
1. Fan Control
2. Air Delivery Mode Control
3. Temperature Control
Use this control panel to maintain a
separate temperature setting. Adjust
the direction of the airflow or adjust
the fan speed for the rear seat
passenger(s). When the fan knob is in the AUX
position, the rear climate control
panel can be used to adjust the
climate settings in the rear
seating area.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Climate Controls 147
Rear Climate Control Panel
1. Fan Control
2. Air Delivery Mode Control
3. Temperature Control
For vehicles with a rear climate
control panel, it is located overhead
behind the driver and front
passenger, centered in front of the
second row. To adjust the rear
climate control panel settings by a
rear seat passenger, the front
climate control panel fan knob must
be in the AUX position. The fan
speed, air delivery mode, and
temperature can then be adjusted. AUX :
Turn the fan knob on the
front climate control panel to AUX to
let rear seat passengers use the
control panel in the rear seating
area. This disables the front control
panel. To return control to the front
panel, move the fan knob out
of AUX.
9: Turns the system off.
9:Turn clockwise or
counterclockwise to increase or
decrease the fan speed in the rear
seating area. Temperature Control :
Turn
clockwise or counterclockwise to
increase or decrease the
temperature in the rear
seating area.
The air conditioning system on the
main climate control panel must be
turned on to direct cooled air to the
rear of the vehicle. If it is not on,
then the temperature in the rear of
the vehicle remains at cabin
temperature.
Air Delivery Mode Control : Turn
clockwise or counterclockwise to
change the direction of the airflow in
the rear seating area.
To change the current mode, select
one of the following:
H: Air is directed to the upper
outlets, with some directed to the
floor outlets.
2: Air is directed to the floor
outlets.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
148 Climate Controls
Be sure to keep the area under the
front seats clear of any objects so
that the air inside of the vehicle can
circulate effectively.
For information on how to use the
main climate control system, see
Climate Control Systems0143. For
information on ventilation, see Air
Vents 0148.Air Vents
Use the outlets located near the
center and on the sides of the
instrument panel to change the
direction of airflow.
Operation Tips
.
Clear away any ice, snow or
leaves from the air inlets at the
base of the windshield that may
block the flow of air into the
vehicle.
. Use of non-GM approved hood
deflectors may adversely affect
the performance of the system.
. Clear snow off the hood to
improve visibility and help
decrease moisture drawn into
the vehicle.
. Keep the path under the front
seats clear of objects to help
circulate the air inside of the
vehicle more effectively.
Maintenance
Service
All vehicles have a label underhood
that identifies the refrigerant used in
the vehicle. The refrigerant system
should only be serviced by trained
and certified technicians. The air
conditioning evaporator should
never be repaired or replaced by
one from a salvage vehicle.
It should only be replaced by a new
evaporator to ensure proper and
safe operation.
During service, all refrigerants
should be reclaimed with proper
equipment. Venting refrigerants
directly to the atmosphere is harmful
to the environment and may also
create unsafe conditions based on
inhalation, combustion, frostbite,
or other health-based concerns.
The air conditioning system requires
periodic maintenance. See
Maintenance Schedule 0304.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Vehicle Care 235
If No Steam is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day
. Stops after high-speed driving
. Idles for long periods in traffic
. Tows a trailer.
If the overheat warning is displayed
with no sign of steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral) and let the
engine idle.
If the engine coolant temperature
gauge is no longer in the overheat
zone or an overheat warning no longer displays, the vehicle can be
driven. Continue to drive the vehicle
slowly for about 10 minutes. Keep a
safe vehicle distance from the
vehicle in front. If the warning does
not come back on, continue to drive
normally and have the cooling
system checked for proper fill and
function.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is still no sign of steam,
push down the accelerator until the
engine speed is about twice as fast
as normal idle speed for at least
three minutes while parked. If the
warning is still on, turn off the
engine until it cools down.
If the decision is made not to lift the
hood, get service help right away.
Engine Fan
The vehicle has a clutched engine
cooling fan. When the clutch is
engaged, the fan spins faster to
provide more air to cool the engine.
In most everyday driving conditions,
the fan is spinning slower and the
clutch is not fully engaged. This
improves fuel economy and reduces
fan noise. Under heavy vehicle
loading, trailer towing, and/or high
outside temperatures, the fan speed
increases as the clutch more fully
engages, so an increase in fan
noise may be heard. This is normal
and should not be mistaken as the
transmission slipping or making
extra shifts. It is merely the cooling
system functioning properly. The fan
will slow down when additional
cooling is not required and the
clutch partially disengages.
This fan noise may be heard when
starting the engine. It will go away
as the fan clutch partially
disengages.
Power Steering Fluid

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Vehicle Care 259
(6) Service Description:These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Light Truck (LT-Metric) Tire
(1) Light Truck (LT-Metric)
Tire
:The United States version
of a metric tire sizing system.
The letters LT as the first two
characters in the tire size mean
a light truck tire engineered to
standards set by the U.S. Tire
and Rim Association. (2) Tire Width
:The three-digit
number indicates the tire section
width in millimeters from
sidewall to sidewall.
(3) Aspect Ratio
:A two-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 75, as shown in
item 3 of the light truck
(LT-Metric) tire illustration, it
would mean that the tire's
sidewall is 75 percent as high as
it is wide.
(4) Construction Code
:A letter
code is used to indicate the type
of ply construction in the tire.
The letter R means radial ply
construction; the letter D means
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter
:Diameter of
the wheel in inches.
(6) Load Range
:Load Range. (7) Service Description
:The
service description indicates the
load index and speed rating of a
tire. If two numbers are given as
in the example, 120/116, then
this represents the load index for
single versus dual wheel usage
(single/dual). The speed rating is
the maximum speed a tire is
certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch of
the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight
:The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Vehicle Care 289
terminal if the vehicle has one.
Do not let the other end touch
metal. Connect it to the
positive (+) terminal of the good
battery. Use a remote
positive (+) terminal if the
vehicle has one.
7. Now connect the black negative (−) cable to the
negative (−) terminal of the
good battery. Use a remote
negative (−) terminal if the
vehicle has one.
Do not let the other end touch
anything until the next step.
The other end of the
negative (−) cable does not go
to the dead battery. It goes to a
heavy, unpainted metal engine
part or to a remote negative (−)
terminal on the vehicle with the
dead battery. On your van, use
the unpainted radio antenna
bracket as a remote
negative (−) terminal.
8. Connect the other end of thenegative (−) cable to the
negative (−) terminal location
on the vehicle with the dead
battery. On your van, use the
unpainted radio antenna
bracket as a remote
negative (−) terminal.
Caution
The vehicle uses the unpainted
radio antenna bracket as a
remote negative (-) terminal.
Move the antenna coaxial cable
(Continued)
Caution (Continued)
out of the way before clamping
the negative jumper cable to the
fixed antenna bracket. Avoid
touching the negative cable clamp
to the air conditioning line. Failure
to do either of these could
damage the vehicle. The repairs
would not be covered by the
vehicle warranty.
9. Now start the vehicle with the good battery and run the
engine for a while.
10. Try to start the vehicle that had the dead battery. If it will not
start after a few tries, it
probably needs service.
Caution
If the jumper cables are
connected or removed in the
wrong order, electrical shorting
may occur and damage the
(Continued)