2020 GMC SAVANA heater

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Driving and Operating 149
Driving and
Operating
Driving Information
Driving for Better FuelEconomy . . . . . . . . . . . . . . . . . . . . 150
Distracted Driving . . . . . . . . . . . . 150
Defensive Driving . . . . . . . . . . . . . 151
Drunk Driving . . . . . . . . . . . . . . . . . 151
Control of a Vehicle . . . . . . . . . . . 152
Braking . . . . . . . . . . . . . . . . . . . . . . . 152
Steering . . . . . . . . . . . . . . . . . . . . . . 152
Off-Road Recovery . . . . . . . . . . . 153
Loss of Control . . . . . . . . . . . . . . . 153
Driving on Wet Roads . . . . . . . . 154
Hill and Mountain Roads . . . . . 155
Winter Driving . . . . . . . . . . . . . . . . 155
If the Vehicle Is Stuck . . . . . . . . 157
Vehicle Load Limits . . . . . . . . . . . 157
Starting and Operating
New Vehicle Break-In . . . . . . . . . 161
Ignition Positions . . . . . . . . . . . . . 162
Starting the Engine . . . . . . . . . . . 164
Fast Idle System . . . . . . . . . . . . . 165
Retained Accessory Power (RAP) . . . . . . . . . . . . . . . . 166 Engine Coolant Heater . . . . . . . 166
Shifting Into Park . . . . . . . . . . . . . 168
Shifting out of Park . . . . . . . . . . . 169
Parking over Things
That Burn . . . . . . . . . . . . . . . . . . . 169
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 169
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . 170
Automatic Transmission
Automatic Transmission . . . . . . 170
Manual Mode . . . . . . . . . . . . . . . . . 173
Tow/Haul Mode . . . . . . . . . . . . . . . 174
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 175
Parking Brake . . . . . . . . . . . . . . . . 176
Brake Assist . . . . . . . . . . . . . . . . . . 176
Hill Start Assist (HSA) . . . . . . . . 176
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . 177
Locking Rear Axle . . . . . . . . . . . . 179
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 179
Driver Assistance Systems
Driver Assistance Systems . . . 181
Rear Vision Camera (RVC) . . . 183
Park Assist . . . . . . . . . . . . . . . . . . . 184
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . 185
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 187
Lane Departure Warning (LDW) . . . . . . . . . . . . . 189
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . 190
Recommended Fuel . . . . . . . . . . 191
Prohibited Fuels . . . . . . . . . . . . . . 191
Fuels in Foreign Countries . . . 191
Fuel Additives . . . . . . . . . . . . . . . . 191
E85 or FlexFuel . . . . . . . . . . . . . . 192
Filling the Tank . . . . . . . . . . . . . . . 193
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 194

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
166 Driving and Operating
.Pressing the cruise control SET-
button a second time.
. Pressing the accelerator more
than one-quarter of the
way down.
. Turning the ignition off.
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 is on or in ACC/
ACCESSORY. Once the ignition is
turned from on to off, power to the
radio and power windows will
continue to work for 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.
4.3L V6 Engine
6.0L V8 Engine
4. Open the hood and unwrap the electrical cord.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Driving and Operating 167
For V6 engines, the cord for
the engine coolant heater is on
the driver side of the engine
compartment.
For V8 engines, the cord for
the engine coolant heater is
behind the engine air cleaner/
filter.
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.
5. 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.
6. 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-13882574) -
2020 - CRC - 11/1/19
230 Vehicle Care
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 0234.

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 241
TAMPERING WITH NOISE
CONTROL SYSTEM
PROHIBITED
Federal law prohibits the following
acts or the causing thereof:1. The removal or rendering inoperative by any person,
other than for purposes of
maintenance, repair,
or replacement, of any device
or element of design
incorporated into any new
vehicle for the purpose of noise
control prior to its sale or
delivery to the ultimate
purchaser or while it is in
use; or
2. The use of the vehicle after such 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).

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
Vehicle Care 251
FusesUsage
66 Daytime running lamps 2
67 Daytime running lamps 1
68 Auxiliary stoplamps
69 External power for trailer
70 Upfitter stoplamps
71 Fuel heater/ FlexFuel sensor
72 Body control module 6
73 Lighter/Data link connector
74 Front blower
75 Engine control module
76 –
77 O2 sensor 1
78 Engine control module, powertrain
signal 1 Fuses
Usage
79 Ignition coils/ injectors - even
Relays Usage
15 Run/Crank
37 –
38 Fuel pump
39 Crank
40 A/C compressor
48 –
49 Powertrain
50 –
57 –
60 – Auxiliary Fuse Block
This component is near the fuse
block in the engine compartment
Fuses Usage
MR-1 Upfitter 1
MR-2 Upfitter 2
MR-3 Upfitter power control
Relays Usage
MR Rel 1 Upfitter 1
MR Rel 2 Upfitter 2

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-13882574) -
2020 - CRC - 11/1/19
346 Index
Driving (cont'd)Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 195
Defensive . . . . . . . . . . . . . . . . . . . . . 151
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 151
Hill and Mountain Roads . . . . . . 155
If the Vehicle is Stuck . . . . . . . . . 157
Loss of Control . . . . . . . . . . . . . . . 153
Off-Road Recovery . . . . . . . . . . . 153
Vehicle Load Limits . . . . . . . . . . . 157
Wet Roads . . . . . . . . . . . . . . . . . . . 154
Winter . . . . . . . . . . . . . . . . . . . . . . . . 155
Dual Tire Rotation . . . . . . . . . . . . . . . . . . . . . . 269
E
E85 or FlexFuel . . . . . . . . . . . . . . . . 192
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . . 212
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 248
Floor Console Fuse Block . . . . 252
Fuses and Circuit Breakers . . . 248
Overload . . . . . . . . . . . . . . . . . . . . . 247
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . 335 Engine
Air Cleaner/Filter . . . . . . . . . . . . . 228
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . 92
Compartment Overview . . . . . . . 217
Coolant Heater . . . . . . . . . . . . . . . 166
Coolant Temperature Gauge . . . . 89
Cooling System . . . . . . . . . . . . . . . 229
Drive Belt Routing . . . . . . . . . . . . 319
Exhaust . . . . . . . . . . . . . . . . . . . . . . 169
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Oil Life System . . . . . . . . . . . . . . . 223
Oil Pressure Gauge . . . . . . . . . . . . 88
Oil Pressure Light . . . . . . . . . . . . . . 97
Overheating . . . . . . . . . . . . . . . . . . 234
Power Messages . . . . . . . . . . . . . 104
Running While Parked . . . . . . . . 170
Starting . . . . . . . . . . . . . . . . . . . . . . . 164
Enhanced Technology Glass . . . . 24
Entry Lighting . . . . . . . . . . . . . . . . . . . 114
Entry/Exit Lighting . . . . . . . . . . . . . . 114
Equipment, Towing . . . . . . . . . . . . . 207
Event Data Recorders . . . . . . . . . . 332
Exit Lighting . . . . . . . . . . . . . . . . . . . . 114
Extender, Seat Belt . . . . . . . . . . . . . . 42
Exterior Lamp Controls . . . . . . . . . 109
Exterior Lamps Off Reminder . . . 110 Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 115
F
Fan
Engine . . . . . . . . . . . . . . . . . . . . . . . . 235
Fast Idle System . . . . . . . . . . . . . . . . 165
Filter,
Engine Air Cleaner . . . . . . . . . . . 228
Fixed Mast Antenna . . . . . . . . . . . . 125
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 110
Flashers, Hazard Warning . . . . . . 112
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 275 Changing . . . . . . . . . . . . . . . . . . . . . 276
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 301
Fluid
AutomaticTransmission . . . . . . . . . . . 224, 227
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 238
Power Steering . . . . . . . . . . . . . . . 235
Washer . . . . . . . . . . . . . . . . . . . . . . . 236
Folding Mirrors . . . . . . . . . . . . . . . . . . 22
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . 185
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 329