2018 GMC SAVANA heater

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
160 Driving and Operating
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . 161
Defensive Driving . . . . . . . . . . . . . 161
Drunk Driving . . . . . . . . . . . . . . . . . 162
Control of a Vehicle . . . . . . . . . . . 162
Braking . . . . . . . . . . . . . . . . . . . . . . . 162
Steering . . . . . . . . . . . . . . . . . . . . . . 162
Off-Road Recovery . . . . . . . . . . . 163
Loss of Control . . . . . . . . . . . . . . . 163
Driving on Wet Roads . . . . . . . . 164
Hill and Mountain Roads . . . . . 165
Winter Driving . . . . . . . . . . . . . . . . 165
If the Vehicle Is Stuck . . . . . . . . 166
Vehicle Load Limits . . . . . . . . . . . 167
Starting and Operating
New Vehicle Break-In . . . . . . . . . 171
Ignition Positions . . . . . . . . . . . . . 172
Starting the Engine . . . . . . . . . . . 173
Fast Idle System . . . . . . . . . . . . . 174
Retained AccessoryPower (RAP) . . . . . . . . . . . . . . . . 175
Engine Coolant Heater . . . . . . . 175
Shifting Into Park . . . . . . . . . . . . . 177
Shifting out of Park . . . . . . . . . . . 178 Parking over Things
That Burn . . . . . . . . . . . . . . . . . . . 178
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 179
Running the Vehicle WhileParked . . . . . . . . . . . . . . . . . . . . . . 179
Automatic Transmission
Automatic Transmission . . . . . . 180
Manual Mode . . . . . . . . . . . . . . . . . 183
Tow/Haul Mode . . . . . . . . . . . . . . . 184
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 184
Parking Brake . . . . . . . . . . . . . . . . 185
Brake Assist . . . . . . . . . . . . . . . . . . 186
Hill Start Assist (HSA) . . . . . . . . 186
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . 186
Locking Rear Axle . . . . . . . . . . . . 188
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 189
Driver Assistance Systems
Rear Vision Camera (RVC) . . . 191
Parking Assist . . . . . . . . . . . . . . . . 192 Side Blind Zone
Alert (SBZA) . . . . . . . . . . . . . . . . 193
Fuel
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 195
California FuelRequirements . . . . . . . . . . . . . . . 196
Fuels in Foreign Countries . . . 196
Fuel Additives . . . . . . . . . . . . . . . . 196
E85 or FlexFuel . . . . . . . . . . . . . . 197
Filling the Tank . . . . . . . . . . . . . . . 198
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 199
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 200
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . 200
Trailer Towing . . . . . . . . . . . . . . . . 202
Towing Equipment . . . . . . . . . . . . 207
Trailer Sway Control (TSC) . . . 209
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . 210

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Driving and Operating 175
.Press and release the cruise
control SET- button. Engine
speed will be held at
approximately 1200 rpm.
When the fast idle is active, the
Driver Information Center (DIC) will
display FAST IDLE ON.
One of the following actions will turn
off the fast idle:
. Pressing the brake.
. Selecting the cruise control
cancel button.
. Releasing the parking brake.
. Moving the transmission shift
lever out of P (Park) or
N (Neutral).
. Selecting the cruise control on/
off button when it was
previously on.
. Pressing the cruise control SET-
button a second time.
. Pressing the accelerator more
than one-quarter of the
way down.
. Turning the ignition switch to the
LOCK/OFF position.Retained Accessory
Power (RAP)
These vehicle accessories can be
used for up to 10 minutes after the
engine is turned off:
.Audio System
. Power Windows (if equipped)
These features will work when the
ignition key is in ON/RUN or ACC/
ACCESSORY. Once the key is
turned from ON/RUN to LOCK/OFF,
power to the radio and power
windows will continue to work
10 minutes or until the driver door is
opened.
Engine Coolant Heater
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
{Warning
Do not plug in the engine block
heater while the vehicle is parked
in a garage or under a carport.
Property damage or personal
injury may result. Always park the
vehicle in a clear open area away
from buildings or structures.
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.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
176 Driving and Operating
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
(Continued)
Warning (Continued)
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
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
(Continued)
Warning (Continued)
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.
4. Before starting the engine, be sure to unplug and store the
cord as it was before to keep it
away from moving engine parts
and prevent damage.
The length of time the heater should
remain plugged in depends on
several factors. Ask a dealer in the
area where you will be parking the
vehicle for the best advice on this.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Vehicle Care 227
4.3L V6 Engine
1. Radiator Pressure Cap
2. Coolant Recovery Tank
3. Engine Cooling Fan (Outof View)
6.0L V8 Engine
1. Radiator Pressure Cap
2. Coolant Recovery Tank
3. Engine Cooling Fan (Outof View)
{Warning
An underhood electric fan can
start up even when the engine is
not running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{Warning
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving 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 0231.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
232 Vehicle Care
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.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Vehicle Care 239
2. The use of the vehicle aftersuch device or element of
design has been removed or
rendered inoperative by any
person.
Among those acts presumed to
constitute tampering are the acts
listed below.
Insulation:
Removal of the noise shields or any
underhood insulation.
Engine:
Removal or rendering the engine
speed governor, if equipped,
inoperative so as to allow engine
speed to exceed manufacturer
specifications.
Fan and Drive:
. Removal of the fan clutch,
if equipped, or rendering the
clutch inoperative.
. Removal of the fan shroud,
if equipped. Air Intake:
.
Removal of the air cleaner
silencer.
. Modification of the air cleaner.
Exhaust:
. Removal of the muffler and/or
resonator.
. Removal of the exhaust pipes
and exhaust pipe clamps.
Fuel Operated Heater (FOH) -
Diesel Engine:
. Removal of the muffler.
Starter Switch Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. 2. Apply both the parking brake
and the regular brake.
Do not use the accelerator
pedal, and be ready to turn off
the engine immediately if it
starts.
3. Try to start the engine in each gear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
Automatic Transmission
Shift Lock Control
Function Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Vehicle Care 249
FusesUsage
41 Transmission control 2 module
battery power
42 Trailer wiring
43 –
44 Starter solenoid
45 Engine control module/Powertrain
46 AC DC inverter
47 Cooling fan –low
51 Left high-beam headlamp
52 Right high-beam headlamp
53 Left low-beam headlamp
54 Right low-beam headlamp Fuses
Usage
55 Wipers
56 Canister vent solenoid
58 Body control module 2
59 Body control module 1
61 Engine oil solenoid
62 O2 sensor 2
63 –
64 Mass air flow/ Canister vent
65 Ignition/Injectors –odd
66 Daytime running lamps 2
67 Daytime running lamps 1 Fuses
Usage
68 Auxiliary stoplamps
69 External power for trailer
70 Upfitter stoplamps
71 Fuel heater/Flex fuel sensor
72 Body control module 6
73 Lighter/Data link connector
74 Front blower
75 V6 fuel injectors
76 –
77 O2 sensor 1
78 Engine control module/Powertrain
79 Ignition/Injectors –even

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-11374214) -
2018 - CRC - 2/2/18
Index 345
Driving (cont'd)Off-Road Recovery . . . . . . . . . . . 163
Vehicle Load Limits . . . . . . . . . . . 167
Wet Roads . . . . . . . . . . . . . . . . . . . 164
Winter . . . . . . . . . . . . . . . . . . . . . . . . 165
Dual Tire Rotation . . . . . . . . . . . . . . . . . . . . . . 268
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 197
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 210
Electrical System Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 247
Floor Console Fuse Block . . . . 251
Fuses and Circuit Breakers . . . 246
Overload . . . . . . . . . . . . . . . . . . . . . 246
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 331
Engine Air Cleaner/Filter . . . . . . . . . . . . . 225
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 103
Compartment Overview . . . . . . . 215
Coolant Heater . . . . . . . . . . . . . . . 175
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 100 Engine (cont'd)
Cooling System . . . . . . . . . . . . . . . 226
Drive Belt Routing . . . . . . . . . . . . 315
Exhaust . . . . . . . . . . . . . . . . . . . . . . 179
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Oil Life System . . . . . . . . . . . . . . . 220
Oil Pressure Gauge . . . . . . . . . . . . 99
Oil Pressure Light . . . . . . . . . . . . 108
Overheating . . . . . . . . . . . . . . . . . . 231
Power Messages . . . . . . . . . . . . . .114
Running While Parked . . . . . . . . 179
Starting . . . . . . . . . . . . . . . . . . . . . . . 173
Enhanced Technology Glass . . . . 39
Entry/Exit Lighting . . . . . . . . . . . . . . 125
Equipment, Towing . . . . . . . . . . . . . 207
Event Data Recorders . . . . . . . . . . 328
Extender, Seat Belt . . . . . . . . . . . . . . 55
Exterior Lamp Controls . . . . . . . . . 120
Exterior Lamps Off Reminder . . . 121
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 125
F
FanEngine . . . . . . . . . . . . . . . . . . . . . . . . 232
Fast Idle System . . . . . . . . . . . . . . . . 174 Filter,
Engine Air Cleaner . . . . . . . . . . . 225
Fixed Mast Antenna . . . . . . . . . . . . 136
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 121
Flashers, Hazard Warning . . . . . . 123
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 274 Changing . . . . . . . . . . . . . . . . . . . . . 276
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 298
Fluid AutomaticTransmission . . . . . . . . . . . 221, 224
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 235
Power Steering . . . . . . . . . . . . . . . 233
Washer . . . . . . . . . . . . . . . . . . . . . . . 233
Folding Mirrors . . . . . . . . . . . . . . . . . . 37
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 326
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 42
Front Storage . . . . . . . . . . . . . . . . . . . . 87
Front Turn Signal Bulb Replacement . . . . . . . . . . . . 243
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Additives . . . . . . . . . . . . . . . . . . . . . 196
Economy Driving . . . . . . . . . . . . . . . 23