heating GMC SAVANA 2016 User Guide

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
Climate Controls 157
Climate Controls
Climate Control Systems
Climate Control Systems . . . . . 157
Rear Heating System . . . . . . . . . 159
Rear Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 159
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 162
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(Fan Control) : Turn the knob
clockwise or counterclockwise to
increase or decrease the fan speed.
9(Off) : 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(Vent) : Air is directed to the
instrument panel outlets.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
Climate Controls 159
The defogger only works when the
ignition is in ON/RUN. The defogger
turns off if the ignition is in the ACC/
ACCESSORY or LOCK/OFF
position.
Do not drive the vehicle until all the
windows are clear.
Caution
Do not use a razor blade or sharp
object to clear the inside rear
window. Do not adhere anything
to the defogger grid lines in the
rear glass. These actions may
damage the rear defogger.
Repairs would not be covered by
the vehicle warranty.
Rear Heating System
If equipped, the rear heating system
lets you adjust the amount of air
flowing into the rear of the vehicle,
from the front seating area. This
feature works with the main climate
control system in the vehicle.
AUX :The thumbwheel for this
system is on the instrument panel
below the audio system.
9(Fan) : Turn the thumbwheel up
or down to increase or decrease the
amount of heated air sent to the
rear seating area.
Q(High) : This position supplies the
most amount of heat to the rear
seating area.
c(Medium) : This position
supplies half the amount of heat to
the rear seating area.
R(Low) : This position supplies the
least amount of heat to the rear
seating area.
9(Off) : 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.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
168 Driving and Operating
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips include:
.Keep the vehicle serviced and in
good shape.
. Check all fluid levels and brakes,
tires, cooling system, and
transmission.
. Shift to a lower gear when going
down steep or long hills.
{Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
could result in a loss of braking.
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. This can cause
overheating of the brakes and
loss of steering. Always have the
engine running and the vehicle
in gear.
. Drive at speeds that keep the
vehicle in its own lane. Do not
swing wide or cross the
center line.
. Be alert on top of hills;
something could be in your lane
(e.g., stalled car, accident).
. Pay attention to special road
signs (e.g., falling rocks area,
winding roads, long grades,
passing or no-passing zones)
and take appropriate action.
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires and
the road creates less traction or
grip, so drive carefully. Wet ice can
occur at about 0 °C (32 °F) when
freezing rain begins to fall. Avoid
driving on wet ice or in freezing rain
until roads can be treated.
For slippery road driving:
.Accelerate gently. Accelerating
too quickly causes the wheels to
spin and makes the surface
under the tires slick.
. Turn on Traction Control. See
Traction Control/Electronic
Stability Control 0188.
. Antilock Brake System (ABS)
improves vehicle stability during
hard stops, but the brakes
should be applied sooner than
when on dry pavement. See
Antilock Brake System
(ABS) 0187.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
178 Driving and Operating
Engine Heater
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
The engine coolant heater can
provide easier starting and better
fuel economy during engine
warm-up in cold weather conditions
at or below−18 °C (0 °F). Vehicles
with an engine coolant heater
should be plugged in at least four
hours before starting. An internal
thermostat in the plug end of the
cord may exist which will prevent
engine coolant heater operation at
temperatures above −18 °C (0 °F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord.
The cord for the engine coolant
heater is on the driver side of
the engine compartment and is
attached to the hose for the
power steering reservoir. Check the heater cord for
damage. If it is damaged, do
not use it. See your dealer for
a replacement. Inspect the
cord for damage yearly.
3. Plug it into a normal, grounded 110-volt AC outlet.
{Warning
Improper use of the heater cord
or an extension cord can damage
the cord and may result in
overheating and fire.
. Plug the cord into a
three-prong electrical utility
receptacle that is protected
by a ground fault detection
function. An ungrounded
outlet could cause an
electric shock.
. Use a weatherproof,
heavy-duty, 15 amp-rated
extension cord if needed.
Failure to use the
recommended extension
cord in good operating
(Continued)
Warning (Continued)
condition, or using a
damaged heater or
extension cord, could make
it overheat and cause a fire,
property damage, electric
shock, and injury.
. Do not operate the vehicle
with the heater cord
permanently attached to the
vehicle. Possible heater
cord and thermostat
damage could occur.
. While in use, do not let the
heater cord touch vehicle
parts or sharp edges. Never
close the hood on the
heater cord.
. Before starting the vehicle,
unplug the cord, reattach
the cover to the plug, and
securely fasten the cord.
Keep the cord away from
any moving parts.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
Driving and Operating 203
Passing
More passing distance is needed
when towing a trailer. The
combination will not accelerate as
quickly and is longer so it is
necessary to go much farther
beyond the passed vehicle before
returning to the lane.
Backing Up
Hold the bottom of the steering
wheel with one hand. To move the
trailer to the left, move that hand to
the left. To move the trailer to the
right, move your hand to the right.
Always back up slowly and,
if possible, have someone
guide you.
Making TurnsCaution
Making very sharp turns while
trailering could cause the trailer to
come in contact with the vehicle.
The vehicle could be damaged.
Avoid making very sharp turns
while trailering. When turning with a trailer, make
wider turns than normal. Do this so
the trailer will not strike soft
shoulders, curbs, road signs, trees,
or other objects. Avoid jerky or
sudden maneuvers. Signal well in
advance.
If the trailer turn signal bulbs burn
out, the arrows on the instrument
cluster will still flash for turns. It is
important to check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a lower
gear
before starting down a long or
steep downgrade. If the
transmission is not shifted down, the
brakes might get hot and no longer
work well.
Vehicles can tow in D (Drive). Shift
the transmission to a lower gear if
the transmission shifts too often
under heavy loads and/or hilly
conditions.
The Tow/Haul Mode may be used if
the transmission shifts too often.
See Tow/Haul Mode 0186. When towing at high altitude on
steep uphill grades, consider the
following: Engine coolant will boil at
a lower temperature than at normal
altitudes. If the engine is turned off
immediately after towing at high
altitude on steep uphill grades, the
vehicle may show signs similar to
engine overheating. To avoid this,
let the engine run while parked,
preferably on level ground, with the
transmission in P (Park) for a few
minutes before turning the engine
off. If the overheat warning comes
on, see
Engine Overheating 0228.Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
212 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 213
California Proposition65 Warning . . . . . . . . . . . . . . . . . 213
California Perchlorate Materials Requirements . . . . . 213
Accessories and Modifications . . . . . . . . . . . . . . . . 214
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 214
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 215
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 216
Engine Oil . . . . . . . . . . . . . . . . . . . . 217
Engine Oil Life System . . . . . . . 219
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 220
Engine Air Cleaner/Filter . . . . . . 223
Cooling System . . . . . . . . . . . . . . 224
Engine Coolant . . . . . . . . . . . . . . . 224
Engine Overheating . . . . . . . . . . 228
Engine Fan . . . . . . . . . . . . . . . . . . . 229
Power Steering Fluid . . . . . . . . . 229
Washer Fluid . . . . . . . . . . . . . . . . . 230
Brakes . . . . . . . . . . . . . . . . . . . . . . . 231
Brake Fluid . . . . . . . . . . . . . . . . . . . 232 Battery - North America . . . . . . 233
Rear Axle . . . . . . . . . . . . . . . . . . . . 234
Noise Control System . . . . . . . . 234
Starter Switch Check . . . . . . . . . 235
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 236
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 236
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 236
Wiper Blade Replacement . . . . 237Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 237
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 238
Halogen Bulbs . . . . . . . . . . . . . . . . 238
Headlamps . . . . . . . . . . . . . . . . . . . 238
Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . . . . 240
Taillamps . . . . . . . . . . . . . . . . . . . . . 240
Center High-Mounted Stoplamp (CHMSL) . . . . . . . . . 241
License Plate Lamp . . . . . . . . . . 242
Replacement Bulbs . . . . . . . . . . . 242
Electrical System
Electrical System Overload . . . 243
Fuses and Circuit Breakers . . . 243 Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 243
Floor Console Fuse Block . . . . 247
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 249
All-Season Tires . . . . . . . . . . . . . . 250
Winter Tires . . . . . . . . . . . . . . . . . . 250
All-Terrain Tires . . . . . . . . . . . . . . . 250
Tire Sidewall Labeling . . . . . . . . 250
Tire Designations . . . . . . . . . . . . . 253
Tire Terminology and Definitions . . . . . . . . . . . . . . . . . . 254
Tire Pressure . . . . . . . . . . . . . . . . . 256
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 258
Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . . 259
Tire Inspection . . . . . . . . . . . . . . . . 262
Tire Rotation . . . . . . . . . . . . . . . . . 262
Dual Tire Rotation . . . . . . . . . . . . 263
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 263
Buying New Tires . . . . . . . . . . . . . 264
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 266
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 266
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 268
Wheel Replacement . . . . . . . . . . 268

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
224 Vehicle Care
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
1. Radiator Pressure Cap
2. Coolant Recovery Tank
3. Engine Cooling Fan (Outof View)
{Warning
An electric engine cooling fan can
start even when the engine is not
running. To avoid injury, always
(Continued)
Warning (Continued)
keep hands, clothing, and tools
away from any engine
cooling fan.
{Warning
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is a
leak. If you run the engine, it
could lose all coolant. That could
cause an engine fire, and you
could be burned. Get any leak
fixed before you drive the vehicle.
Caution
Using coolant other than
DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
(Continued)
Caution (Continued)
the engine coolant could require
changing sooner. Any repairs
would not be covered by the
vehicle warranty. Always use
DEX-COOL (silicate-free) coolant
in the vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL®engine
coolant. This coolant is designed to
remain in the vehicle for 5 years or
240 000 km (150,000 mi), whichever
occurs first.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating 0228.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
228 Vehicle Care
Caution
If the pressure cap is not tightly
installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
The vehicle has an indicator to warn
of engine overheating.
There is an engine coolant
temperature gauge on the vehicle's
instrument cluster. SeeEngine
Coolant Temperature Gauge 097.
If the decision is made not to lift the
hood when this warning appears,
but instead get service help right
away, see Roadside Assistance
Program 0313.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface. Then check to see if the engine
cooling fans are running. If the
engine is overheating, the fan
should be running. If it is not, do not
continue to run the engine and have
the vehicle serviced.
See if the engine cooling fan speed
increases when idle speed is
doubled by pushing the accelerator
pedal down. If it does not, the
vehicle needs service. Turn off the
engine.
Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
If Steam is Coming from the
Engine Compartment
{Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
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

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
Vehicle Care 249
Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See
the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much
flexing. There could be a
blowout and a serious
crash. SeeVehicle Load
Limits 0170.
(Continued)
Warning (Continued)
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could
cause serious injury.
Check all tires frequently
to maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are
more likely to be cut,
punctured, or broken by
a sudden impact —such
as when hitting a pothole.
Keep tires at the
recommended pressure.
.Worn or old tires can
cause a crash. If the
tread is badly worn,
replace them.
(Continued)
Warning (Continued)
.Replace any tires that
have been damaged by
impacts with potholes,
curbs, etc.
.Improperly repaired tires
can cause a crash. Only
the dealer or an
authorized tire service
center should repair,
replace, dismount, and
mount the tires.
.Do not spin the tires in
excess of 56 km/h
(35 mph) on slippery
surfaces such as snow,
mud, ice, etc. Excessive
spinning may cause the
tires to explode.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-9159232) -
2016 - crc - 11/11/15
Vehicle Care 257
Caution
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:
.Tire overloading and
overheating which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy.
Overinflated tires, or tires that
have too much air, can
result in:
.Unusual wear.
.Poor handling.
.Rough ride.
.Needless damage from
road hazards. The Tire and Loading
Information label on the vehicle
indicates the original equipment
tires and the correct cold tire
inflation pressures. The
recommended pressure is the
minimum air pressure needed to
support the vehicle's maximum
load carrying capacity.
For additional information
regarding how much weight the
vehicle can carry, and an
example of the Tire and Loading
Information label, see
Vehicle
Load Limits 0170. How the
vehicle is loaded affects vehicle
handling and ride comfort. Never
load the vehicle with more
weight than it was designed to
carry.
When to Check
Check the tires once a month
or more. Do not forget the spare tire,
if the vehicle has one. See
Full-Size Spare Tire
0278 for
additional information.
How to Check
Use a good quality pocket-type
gauge to check tire pressure.
Proper tire inflation cannot be
determined by looking at the tire.
Check the tire inflation pressure
when the tires are cold, meaning
the vehicle has not been driven
for at least three hours or no
more than 1.6 km (1 mi).
Remove the valve cap from the
tire valve stem. Press the tire
gauge firmly onto the valve to
get a pressure measurement.
If the cold tire inflation pressure
matches the recommended
pressure on the Tire and
Loading Information label, no
further adjustment is necessary.
If the inflation pressure is low,
add air until the recommended
pressure is reached. If the