2019 CHEVROLET SUBURBAN heating

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
In Brief 19
Climate Controls
This system controls the heating,
cooling, and ventilation.
1. Driver Temperature Control
2. A/C (Air Conditioning)
3. Air Delivery Mode Controls
4. Fan Control
5. Defrost
6. Passenger TemperatureControl
7. SYNC (Synchronized Temperature)
8. Rear Window Defogger 9. RCTRL (Rear Climate Control
Lockout)
10. Rear Temperature Control
11. Rear Air Delivery Mode Control
12. Rear Fan Control
13. Front Climate Control Power Button
14. Rear AUTO (Automatic Operation)
15. Rear Climate Control Power Button
16. Air Recirculation
17. AUTO (Automatic Operation)
See Dual Automatic Climate Control
System 0194 andRear Climate
Control System 0198 (if equipped).
Transmission
Range Selection Mode
The Range Selection Mode switch,
if equipped, is on the shift lever.
1. To enable the Range Selection feature, move the shift lever to
the L (Manual Mode) position.
The current range will appear
next to the L. This is the
highest attainable range with
all lower gears accessible. As
an example, when 5 (Fifth)
gear is selected, 1 (First)
through 5 (Fifth) gears are
available.
2. Press the plus/minus buttons on the shift lever to select the
desired range of gears for
current driving conditions.
See Manual Mode 0234 or
Manual Mode 0236.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Instruments and Controls 135
Steering Wheel Controls
The infotainment system can be
operated by using the steering
wheel controls. See“Steering Wheel
Controls” in the infotainment
manual.
Heated Steering Wheel
(: If equipped, press to turn it on or
off. A light next to the button
displays when the feature is
turned on.
The steering wheel takes about
three minutes to start heating.
Horn
To sound the horn, pressaon the
steering wheel.
Windshield Wiper/Washer
The windshield wiper control is on
the turn signal lever.
The windshield wipers are controlled
by turning the band with
z
FRONT on it.
1: Fast wipes.
w:Slow wipes.
3INT : If Rainsense is turned off,
turn the
zFRONT band up for
more frequent wipes or down for
less frequent wipes. If Rainsense is
turned on, see “Rainsense”later in
this section. OFF :
Turns the windshield
wipers off.
8: For a single wipe, turn the
band down, then release. For
several wipes, hold the band down.
Clear ice and snow from the wiper
blades before using them. If frozen
to the windshield, carefully loosen or
thaw them. Damaged wiper blades
should be replaced. See Wiper
Blade Replacement 0330.
Heavy snow or ice can overload the
wiper motor. An internal circuit
breaker to the motor will stop the
motor until it cools down.
Wiper Parking
If the ignition is turned off while the
wipers are on
w,1, or3INT,
they will immediately stop.
If
zFRONT is then moved to
OFF before the driver door is
opened or within 10 minutes, the
wipers will restart and move to the
base of the windshield.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
194 Climate Controls
Climate Controls
Climate Control Systems
Dual Automatic ClimateControl System . . . . . . . . . . . . . 194
Rear Climate Control System . . . . . . . . . . . . . . . . . . . . . . 198
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 199
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . 200
Service . . . . . . . . . . . . . . . . . . . . . . . 201
Climate Control
Systems
Dual Automatic Climate
Control System
With this system the heating,
cooling, and ventilation in the
vehicle can be controlled. Some
climate control settings can be
changed. See “Climate and Air
Quality” underVehicle
Personalization 0172.
1. Driver Temperature Control
2. A/C (Air Conditioning) 3. Air Delivery Mode Controls
4. Fan Control
5. Defrost
6. Passenger Temperature
Control
7. SYNC (Synchronized Temperature)
8. Rear Window Defogger
9. RCTRL (Rear Climate Control Lockout)
10. Rear Temperature Control
11. Rear Air Delivery Mode Control
12. Rear Fan Control
13. Front Climate Control Power Button
14. Rear AUTO (Automatic Operation)
15. Rear Climate Control Power Button
16. Air Recirculation
17. AUTO (Automatic Operation)

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
212 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 assist. 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, crash).
. 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 0246.
. The 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) 0244.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Driving and Operating 227
{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
condition, or using a
damaged heater or
extension cord, could make
(Continued)
Warning (Continued)
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.
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. If you do not, it could be
damaged.
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.
Retained Accessory
Power (RAP)
Some vehicle accessories may be
used after the ignition is turned off.
The power windows and sunroof,
if equipped, will continue to work for
up to 10 minutes or until any door is
opened.
The infotainment system will
continue to work for 10 minutes,
until the driver door is opened,
or until the ignition is turned on or
placed in ACC/ACCESSORY.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Driving and Operating 281
Driving on Grades
Reduce speed and shift to a lower
gear before starting down a long or
steep downhill grade. If the
transmission is not shifted down, the
brakes may overheat and result in
reduced braking efficiency.
The vehicle 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.
When towing at higher altitudes,
engine coolant will boil at a lower
temperature than at lower altitudes.
If the engine is turned off
immediately after towing at high
altitude on steep uphill grades, the
vehicle could show signs similar to
engine overheating. To avoid this,
let the engine run, 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 Overheating0321.
Parking on Hills
{Warning
To prevent serious injury or death,
always park your vehicle and
trailer on a level surface when
possible.
When parking your vehicle and your
trailer on a hill: 1. Press the brake pedal, but do not shift into P (Park) yet. Turn
the wheels into the curb if
facing downhill or into traffic if
facing uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, gradually release the
brake pedal to allow the chocks
to absorb the load of the trailer. 4. Reapply the brake pedal. Then
apply the parking brake and
shift into P (Park).
5. Release the brake pedal.Leaving After Parking on a Hill
1. Apply and hold the brake pedal.
.Start the engine.
. Shift into a gear.
. Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Driving and Operating 283
Pulling the Trailer from the Water1. Press and hold the brake pedal.
2. Start the engine and shift into a gear.
3. Release the parking brake.
4. Let up on the brake pedal.
5. Drive slowly until the tires are clear of the chocks.
6. Stop and have someone pick up and store the chocks.
7. Slowly pull the trailer from the water.
8. Once the vehicle and trailer have been driven from the
sloped part of the boat ramp,
the vehicle can be shifted from
four-wheel-drive high. Shift into
the drive mode that is
appropriate for the road
conditions.Caution
If the vehicle tires begin to spin
and the vehicle begins to slide
toward the water, remove your
foot from the accelerator pedal
and apply the brake pedal. Seek
help to have the vehicle towed up
the ramp.
Maintenance when Trailer
Towing
The vehicle needs service more
often when used to tow trailers. See
Maintenance Schedule 0403. It is
especially important to check the
automatic transmission fluid, engine
oil, axle lubricant, belts, cooling
system, and brake system before
and during each trip.
Check periodically that all nuts and
bolts on the trailer hitch are tight.
Engine Cooling when Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine Overheating
0 321.
Trailer Towing
Caution
Towing a trailer improperly can
damage the vehicle and result in
costly repairs not covered by the
vehicle warranty. To tow a trailer
correctly, follow the directions in
this section and see your dealer
for important information about
towing a trailer with the vehicle.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-12460269) - 2019 - CRC - 9/11/18
Vehicle Care 299
Vehicle Care
General Information
General Information . . . . . . . . . . 300
California Proposition65 Warning . . . . . . . . . . . . . . . . . 301
California Perchlorate Materials Requirements . . . . . 301
Accessories and Modifications . . . . . . . . . . . . . . . . 301
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 302
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 303
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 303
Engine Oil . . . . . . . . . . . . . . . . . . . . 309
Engine Oil Life System . . . . . . . 311
Automatic Transmission Fluid (6-Speed Transmission) . . . . . 313
Automatic Transmission Fluid (10-Speed Transmission) . . . 316
Engine Air Cleaner/Filter . . . . . . 316
Cooling System . . . . . . . . . . . . . . 317
Engine Overheating . . . . . . . . . . 321
Engine Fan . . . . . . . . . . . . . . . . . . . 322
Power Steering Fluid . . . . . . . . . 323
Washer Fluid . . . . . . . . . . . . . . . . . 323 Brakes . . . . . . . . . . . . . . . . . . . . . . . 324
Brake Fluid . . . . . . . . . . . . . . . . . . . 324
Battery - North America . . . . . . 326
Four-Wheel Drive . . . . . . . . . . . . . 326
Front Axle . . . . . . . . . . . . . . . . . . . . 327
Rear Axle . . . . . . . . . . . . . . . . . . . . 327
Starter Switch Check . . . . . . . . . 328
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 329
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 329
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 329
Wiper Blade Replacement . . . . 330
Glass Replacement . . . . . . . . . . 331
Windshield Replacement . . . . . 331
Gas Strut(s) . . . . . . . . . . . . . . . . . . 331
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 332
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 333
Halogen Bulbs . . . . . . . . . . . . . . . . 333
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 333
LED Lighting . . . . . . . . . . . . . . . . . 333
Headlamps . . . . . . . . . . . . . . . . . . . 333
Fog Lamps . . . . . . . . . . . . . . . . . . . 334
Front Turn Signal Lamps . . . . . 334 Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . . . 335
License Plate Lamp . . . . . . . . . . 336
Electrical System
Electrical System Overload . . . 337
Fuses and Circuit Breakers . . . 337
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 338
Instrument Panel Fuse Block (Left) . . . . . . . . . . . . . . . . . 342
Instrument Panel Fuse Block (Right) . . . . . . . . . . . . . . . . . . . . . . 345
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 347
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 348
All-Season Tires . . . . . . . . . . . . . . 349
Winter Tires . . . . . . . . . . . . . . . . . . 349
Low-Profile Tires . . . . . . . . . . . . . 350
All-Terrain Tires . . . . . . . . . . . . . . . 350
Tire Sidewall Labeling . . . . . . . . 350
Tire Designations . . . . . . . . . . . . . 351
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 352
Tire Pressure . . . . . . . . . . . . . . . . . 355
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . 356