2013 GMC SAVANA heater

Black plate (16,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
10-16 Vehicle Care
{WARNING
An electric engine cooling fan can
start even when the engine is not
running. To avoid injury, always
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.Notice:
Using coolant other than
DEX-COOL
®can cause premature
engine, heater core, or radiator
corrosion. In addition, the engine
coolant could require changing
sooner, at 50 000 km (30,000 mi)
or 24 months, whichever occurs
first. 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 on
page 10‑20.
What to Use
{WARNING
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or
others could be burned. Use
a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant.

Black plate (21,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
Vehicle Care 10-21
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. See“Driving on
Grades” underTrailer Towing on
page 9‑49.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air off.
2. Turn the heater on to the highest temperature and to the highest
fan speed. Open the windows as
necessary.
3. In heavy traffic, let the engine idle in N (Neutral) while stopped.
If 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.
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.

Black plate (25,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
Vehicle Care 10-25
{WARNING
If too much brake fluid is added, it
can spill on the engine and/or fuel
operated heater parts,
if equipped. If the vehicle has a
diesel engine and a fuel operated
heater, see“Fuel Operated
Heater (FOH)” in the diesel
engine supplement. The fluid will
burn if the engine is hot enough.
You or others could be burned,
and the vehicle could be
damaged. Add brake fluid only
when work is done on the brake
hydraulic system. See “Checking
Brake Fluid” in this section.
Refer to the Maintenance Schedule
to determine when to check the
brake fluid. See Maintenance
Schedule on page 11‑3.
Checking Brake Fluid
Check brake fluid by looking at the
brake fluid reservoir. See Engine
Compartment Overview on
page 10‑5.
The fluid level should be above
MIN. If it is not, have the brake
hydraulic system checked to see if
there is a leak.
After work is done on the brake
hydraulic system, make sure the
level is above the MIN but not over
the MAX mark. What to Add
Use only new DOT 3 brake fluid
from a sealed container. See
Recommended Fluids and
Lubricants on page 11‑12.
Always clean the brake fluid
reservoir cap and the area around
the cap before removing it. This
helps keep dirt from entering the
reservoir.
{WARNING
With the wrong kind of fluid in the
brake hydraulic system, the
brakes might not work well. This
could cause a crash. Always use
the proper brake fluid.
Notice
.Using the wrong fluid can
badly damage brake
hydraulic system parts. For
example, just a few drops of
mineral-based oil, such as
engine oil, in the brake

Black plate (29,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
Vehicle Care 10-29
Engine:
.Removal or rendering engine
speed governor, if the vehicle
has one, inoperative so as to
allow engine speed to exceed
manufacturer specifications.
Fan and Drive:
.Removal of fan clutch, if the
vehicle has one, or rendering
clutch inoperative.
.Removal of the fan shroud, if the
vehicle has one.
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. Firmly apply both the parking brake and the regular brake.
See Parking Brake on
page 9‑31.
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.
1. Before starting this check, be sure there is enough room
around the vehicle. It should be
parked on a level surface.

Black plate (39,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
Vehicle Care 10-39
Mini Fuse Usage17 Transmission
18 Air Conditioning Compressor
19 Engine Control Module Battery
20 Spare
21 Left Stop/Turn Trailer
22 Spare
23 Spare
24 Fuel Pump
25 Auxiliary Power Outlet
26 Body Control Module 3
27 Special Equipment Option
28 Airbag
29 Steering Wheel Sensor Mini Fuse Usage
30 Engine Control Module Ignition/
Glow Plug Module
31 Transmission Control Module
Ignition
32 Transmission Control Module
Battery
33 Rear Parking Aid Module
34 Spare
35 Fuel Operated Heater Module
36 Fuel System Control Module
Battery
51 Left High-Beam Headlamp
52 Right High-Beam Headlamp Mini Fuse Usage
53 Left Low-Beam Headlamp
54 Right Low-Beam Headlamp
55 Wiper
56 Canister Vent Solenoid
58 Body Control Module 2
59 Body Control Module 1
61 Spare
62 Oxygen Sensor 2 (Post), EV Fan
(Diesel)
63 Spare
64 Mass Air Flow/ Canister Vent
65 Odd Ignition/ Injectors

Black plate (40,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
10-40 Vehicle Care
Mini Fuse Usage66 Daytime Running Lamps 2
(LOLVL-V22)
(If Equipped)
67 Daytime Running Lamps 1
(UPLVL+V22)
(If Equipped)
68 Auxiliary Stop Lamps
69 Trailer Stop Lamps
70 Spare
71 Fuel Heater/Flex Fuel Sensor
72 Body Control Module 6
73 Lighter/Data Link Connection
75 V6 Fuel Injectors
76 Spare
77 Oxygen Sensor 2 (Pre) Mini Fuse Usage
78 Engine Control Module Powertrain
79 Even Ignition/ Injectors
J-Case Fuse Usage 1 ABS Motor
2 ABS Module
41 Spare
42 Trailer Wiring
43 Fan High
44 Starter Solenoid
45 Engine Control Module/Powertrain
46 Spare
47 Fan Lo
74 Front Blower Relay
Usage
15 Run/Crank
37 Spare
38 Fuel Pump
39 Crank
40 Air Conditioning Compressor
48 Fan High
49 Powertrain
50 Spare
57 Fan Low
60 Fan Control

Black plate (42,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
10-42 Vehicle Care
Mini-Fuse UsageF12 Empty
F13 Heating, Ventilation and Air
Conditioning 2
F14 Heating, Ventilation and Air
Conditioning 1
F15 Empty
F17 Outside Rearview Mirror Heater
F18 Rear Window Defogger
F19 Compass
F20 Radio/Chime/ SiriusXM Satellite
Radio (If Equipped)
F21 Remote Function Actuator/Tire
Pressure Monitor Mini-Fuse Usage
F22 Ignition Switch/ Discrete Logic
Ignition
Sensor (PK3)
F23 Instrument Cluster
F25 Heating, Ventilation and Air
Conditioning
Control
F26 Auxiliary/Trailer Backup
F27 Taillamps Backup
F30 Upfitter Courtesy Lamps
F31 Front Door Lock
F32 Rear Door Lock
F33 Cargo Door Unlock
F34 Passenger Door Unlock
F35 Rear Passenger Door Unlock Mini-Fuse Usage
F36 Driver Door Unlock
F37 Empty
F38 Empty
J-Case Fuse Usage F16 Upfitter Auxiliary 1
F24 Empty
F28 Upfitter Auxiliary 2 Reading Lamps
F29 Rear Blower
Relays Usage K1 Run (High Current Micro)
K2 Empty (High Current Micro)
K3 Park Lamps (High Current Micro)
K4 Upfitter Auxiliary 2 (High Current Mini)

Black plate (4,1)GMC Savana Owner Manual - 2013 - 2nd Edition - 9/25/12
i-4 INDEX
E
E85 Fuel . . . . . . . . . . . . . . . . . . . . . . . 9-44
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . 9-57
Electrical System Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-37
Floor Console Fuse Block . . 10-41
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-37
Overload . . . . . . . . . . . . . . . . . . . 10-37
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2
Engine Air Cleaner/Filter . . . . . . . . . . . 10-14
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 5-17
Compartment Overview . . . . . . . 10-5
Coolant . . . . . . . . . . . . . . . . . . . . . 10-16
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-12
Cooling System . . . . . . . . . . . . . 10-15
Cooling System Messages . . . 5-31
Drive Belt Routing . . . . . . . . . . . . 12-5
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-21
Fan . . . . . . . . . . . . . . . . . . . . . . . . . 10-21 Engine (cont'd)
Heater . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Oil Life System . . . . . . . . . . . . . . . 10-8
Oil Messages . . . . . . . . . . . . . . . . . 5-32
Oil Pressure Gauge . . . . . . . . . . 5-11
Overheating . . . . . . . . . . . . . . . . 10-20
Power Messages . . . . . . . . . . . . . 5-32
Pressure Light . . . . . . . . . . . . . . . . 5-23
Running While Parked . . . . . . . . 9-22
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-16
Enhanced Technology Glass . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Entry/Exit Lighting . . . . . . . . . . . . . . 6-6
Equipment, Towing . . . . . . . . . . . . 9-54
Extender, Safety Belt . . . . . . . . . . 3-14
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-2
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . 10-21
Fast Idle System . . . . . . . . . . . . . . . 9-18
Filter, Engine Air Cleaner . . . . . . . . . 10-14
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-4 Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-65
Changing . . . . . . . . . . . . . . . . . . . 10-67
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-89
Fluid AutomaticTransmission . . . . . . . . . 10-9, 10-11
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-24
Power Steering . . . . . . . . . . . . . 10-22
Washer . . . . . . . . . . . . . . . . . . . . . 10-22
Front Axle . . . . . . . . . . . . . . . . . . . . 10-27
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . 3-2
Front Storage . . . . . . . . . . . . . . . . . . . 4-1
Front Turn Signal Bulb Replacement . . . . . . . . . . 10-33
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41
Additives . . . . . . . . . . . . . . . . . . . . . 9-43
E85 (85% Ethanol) . . . . . . . . . . . 9-44
Economy Driving . . . . . . . . . . . . . 1-19
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-46
Filling the Tank . . . . . . . . . . . . . . . 9-45
Foreign Countries . . . . . . . . . . . . 9-43
Gasoline Specifications . . . . . . . 9-42
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Low Fuel Warning Light . . . . . . . 5-23