2021 GMC SAVANA coolant temperature

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
192 Vehicle Care
Warning (Continued)
the wrong mixture, the engine could get
too hot but there would not be an
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. If using this
mixture, nothing else needs to be added.
This mixture:
.Gives freezing protection down to −37 °C
(−34 °F), outside temperature.
.Gives boiling protection up to 129 °C
(265 °F), engine temperature.
.Protects against rust and corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine
temperature.
Caution
Do not use anything other than a mix of
DEX-COOL coolant that meets GM
Standard GMW3420 and clean, drinkable
water. Anything else can cause damage
to the engine cooling system and the
vehicle, which would not be covered by
the vehicle warranty. Never dispose of engine coolant by putting
it in the trash, pouring it on the ground,
or into sewers, streams, or bodies of water.
Have the coolant changed by an authorized
service center, familiar with legal
requirements regarding used coolant
disposal. This will help protect the
environment and your health.
Checking Coolant
The vehicle must be on a level surface when
checking the coolant level.
Check to see if coolant is visible in the
coolant recovery tank. If the coolant inside
the coolant recovery tank is boiling, do not
do anything else until it cools down.
If coolant is visible but the coolant level is
not at or above the indicated mark, add a
50/50 mixture of clean, drinkable water and
DEX-COOL coolant at the coolant recovery
tank, but be sure the cooling system is cool
before this is done.
The coolant recovery tank cap has this
symbol on it.
When the engine is cold, the coolant level
should be at or above the COLD FILL mark.
If it is not, there could be a leak in the
cooling system.
If the coolant is low, add the coolant or take
the vehicle to a dealer for service.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
194 Vehicle Care
3. Fill the radiator with the proper mixture,up to the base of the filler neck. See
Recommended Fluids and Lubricants
0255 for more information about the
proper coolant mixture.
4. Remove the coolant recovery tank cap
and fill to the COLD FILL mark.
5. Reinstall the cap back on the coolant recovery tank, but leave the radiator
pressure cap off.
6. Start the engine and let it run until the upper radiator hose can be felt getting
hot. Watch out for the engine
cooling fan. 7. By this time, the coolant level inside the
radiator filler neck may be lower. If the
level is lower, add more of the proper
mixture through the filler neck until the
level reaches the base of the filler neck.
8. Replace the pressure cap. At any time during this procedure if coolant begins to
flow out of the filler neck, reinstall the
pressure cap.
Caution
If the pressure cap is not tightly installed,
coolant loss and 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.
Caution
Do not run the engine if there is a leak
in the engine cooling system. This can
cause a loss of all coolant and can
damage the system and vehicle. Have
any leaks fixed right away. The vehicle has an indicator to warn of
engine overheating.
There is an engine coolant temperature
gauge on the vehicle's instrument cluster.
See
Engine Coolant Temperature Gauge 073.
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 0265.
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.

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
Vehicle Care 195
If Steam is Coming from the Engine
Compartment
{Warning
Steam and scalding liquids from a hot
cooling system are under pressure.
Turning the pressure cap, even a little,
can cause them to come out at high
speed and you could be burned. Never
turn the cap when the cooling system,
including the pressure cap, is hot. Wait
for the cooling system and pressure cap
to 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 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-14583543) -
2021 - crc - 7/10/20
Index 283
CompartmentsStorage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 279
Control Traction and Electronic Stability . . . . . . . 147
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . . 127
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 73
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119, 122
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Courtesy Transportation Program . . . . . . . . 267
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 264
Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Text Telephone (TTY) Users . . . . . . . . . . . . 264
Customer Information Publications Ordering Information . . . . . 269
Customer Satisfaction Procedure . . . . . . . . . 262
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 268
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection Infotainment System . . . . . . . . . . . . . . . . . . 272
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 272
Daytime Running Lamps (DRL) . . . . . . . . . . . . .91
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . 126
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Devices Auxiliary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Diagnostics Connected Services . . . . . . . . . . . . . . . . . . . . 280
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 126
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Door Cargo Door Relocking . . . . . . . . . . . . . . . . . . . . 11
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 12
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Rear Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Sliding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 261
Driver Assistance Systems . . . . . . . . . . . . . . . 150
Driver Information Center (DIC) . . . . . . . . . . . .81 Driving
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 126
Characteristics and Towing Tips . . . . . . . . 160
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Hill and Mountain Roads . . . . . . . . . . . . . . 129
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . . 131
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 128
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 128
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . . 131
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
E
Electrical Equipment, Add-On . . . . . . . . . . . . 176
Electrical SystemEngine Compartment Fuse Block . . . . . . . 206
Floor Console Fuse Block . . . . . . . . . . . . . . . 209
Fuses and Circuit Breakers . . . . . . . . . . . . . 205
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . 189
Check Light (Malfunction Indicator) . . . . . 76
Compartment Overview . . . . . . . . . . . . . . . . 180
Coolant Heater . . . . . . . . . . . . . . . . . . . . . . . . 138
Coolant Temperature Gauge . . . . . . . . . . . . 73

GMC Savana Owner Manual (GMNA-Localizing-U.S./Canada-14583543) -
2021 - crc - 7/10/20
284 Index
Engine (cont'd)Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . 191
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 261
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 186
Oil Pressure Gauge . . . . . . . . . . . . . . . . . . . . . 72
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . 80
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 85
Running While Parked . . . . . . . . . . . . . . . . . . 141
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Enhanced Technology Glass . . . . . . . . . . . . . . . . 21
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . . 172
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 272
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . .35
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . 90
Exterior Lamps Off Reminder . . . . . . . . . . . . . 90
Exterior Lighting Battery Saver . . . . . . . . . . . 95
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Fast Idle System . . . . . . . . . . . . . . . . . . . . . . . . . .138 Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . 189
Fixed Mast Antenna . . . . . . . . . . . . . . . . . . . . . 103
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 92
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Fluid Automatic Transmission . . . . . . . . . . 186, 189
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Power Steering . . . . . . . . . . . . . . . . . . . . . . . . 196
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Forward Collision Alert (FCA) System . . . . .154
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Front Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Front Turn Signal Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 202
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Economy, Driving for Better . . . . . . . . . . . 126
Filling a Portable Fuel Container . . . . . . . 160
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 158
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 158 Fuel (cont'd)
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Low Fuel Warning Light . . . . . . . . . . . . . . . . 80
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 158
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 158
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 235
Fuses
Engine Compartment Fuse Block . . . . . . . 206
Floor Console Fuse Block . . . . . . . . . . . . . . . 209
Fuses and Circuit Breakers . . . . . . . . . . . . . 205
G
GaugesEngine Coolant Temperature . . . . . . . . . . . . 73
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 72
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Warning Lights and Indicators . . . . . . . . . . 70
General Information Service and Maintenance . . . . . . . . . . . . . . 248
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160