2021 CHEVROLET BLAZER towing

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
58 Seats and Restraints
engaged. Use the following steps to allow
the system to detect that person and enable
the front outboard passenger frontal airbag:1. Turn the vehicle off.
2. Remove any additional material from the seat, such as blankets, cushions, seat
covers, seat heaters, or seat massagers.
3. Place the seatback in the fully upright position.
4. Have the person sit upright in the seat, centered on the seat cushion, with legs
comfortably extended.
5. If the shoulder portion of the belt is pulled out all the way, the child restraint
locking feature will be engaged. This
may unintentionally cause the passenger
sensing system to turn the airbag off for
some adult-sized occupants. If this
happens, unbuckle the belt, let the belt
go back all the way, and then buckle the
belt again without pulling the belt out
all the way.
6. Restart the vehicle and have the person remain in this position for two to
three minutes after the ON indicator
is lit.{Warning
If the front outboard passenger airbag is
turned off for an adult-sized occupant,
the airbag will not be able to inflate and
help protect that person in a crash,
resulting in an increased risk of serious
injury or even death. An adult-sized
occupant should not ride in the front
outboard passenger seat, if the passenger
airbag OFF indicator is lit.
Additional Factors Affecting System
Operation
Seat belts help keep the passenger in
position on the seat during vehicle
maneuvers and braking, which helps the
passenger sensing system maintain the
passenger airbag status. See “Seat Belts”
and “Child Restraints” in the Index for
additional information about the importance
of proper restraint use.
A thick layer of additional material, such as
a blanket or cushion, or aftermarket
equipment such as seat covers, seat heaters,
and seat massagers can affect how well the
passenger sensing system operates. We
recommend that you not use seat covers or
other aftermarket equipment except when approved by GM for your specific vehicle.
See
Adding Equipment to the
Airbag-Equipped Vehicle 059 for more
information about modifications that can
affect how the system operates.
The ON indicator may be lit if an object,
such as a briefcase, handbag, grocery bag,
laptop, or other electronic device, is put on
an unoccupied seat. If this is not desired,
remove the object from the seat.
{Warning
Stowing articles under the passenger seat
or between the passenger seat cushion
and seatback may interfere with the
proper operation of the passenger
sensing system.
Servicing the Airbag-Equipped
Vehicle
Airbags affect how the vehicle should be
serviced. There are parts of the airbag
system in several places around the vehicle.
Your dealer and the service manual have
information about servicing the vehicle and
the airbag system. To purchase a service
manual, see Publication Ordering
Information 0356.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
100 Instruments and Controls
Charging System Light
The charging system light comes on briefly
when the ignition is turned on, but the
engine is not running, as a check to show
the light is working. It should go out when
the engine is started.
If the light stays on, or comes on while
driving, there may be a problem with the
electrical charging system. Have it checked
by your dealer. Driving while this light is on
could drain the battery.
When this light comes on, or is flashing, the
Driver Information Center (DIC) also displays
a message.
If a short distance must be driven with the
light on, be sure to turn off all accessories,
such as the radio and air conditioner. Find a
safe place to stop the vehicle.
Malfunction Indicator Lamp
(Check Engine Light)
This light is part of the vehicle’s emission
control on-board diagnostic system. If this
light is on while the engine is running, a
malfunction has been detected and the
vehicle may require service. The light should
come on to show that it is working when
the ignition is in Service Mode. SeeIgnition
Positions 0200.
Malfunctions are often indicated by the
system before any problem is noticeable.
Being aware of the light and seeking service
promptly when it comes on may prevent
damage.
Caution
If the vehicle is driven continually with
this light on, the emission control system
may not work as well, the fuel economy
may be lower, and the vehicle may not
(Continued)
Caution (Continued)
run smoothly. This could lead to costly
repairs that might not be covered by the
vehicle warranty.
Caution
Modifications to the engine, transmission,
exhaust, intake, or fuel system, or the
use of replacement tires that do not
meet the original tire specifications, can
cause this light to come on. This could
lead to costly repairs not covered by the
vehicle warranty. This could also affect
the vehicle’s ability to pass an Emissions
Inspection/Maintenance test. See
Accessories and Modifications 0254.
If the light is flashing : A malfunction has
been detected that could damage the
emission control system and increase vehicle
emissions. Diagnosis and service may be
required.
To help prevent damage, reduce vehicle
speed and avoid hard accelerations and
uphill grades. If towing a trailer, reduce the
amount of cargo being hauled as soon as
possible.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
102 Instruments and Controls
If the light comes on while driving, pull off
the road and stop carefully. The brake pedal
might be harder to push, or the brake pedal
may go closer to the floor. It could take
longer to stop. If the light is still on, have
the vehicle towed for service. SeeTowing
the Vehicle 0320.
{Warning
The brake system might not be working
properly if the brake system warning
light is on. Driving with the brake system
warning light on can lead to a crash.
If the light is still on after the vehicle has
been pulled off the road and carefully
stopped, have the vehicle towed for
service.
Electric Parking Brake Light
MetricEnglish Base Level
English Uplevel
This light comes on when the parking brake
is applied. If the light continues flashing
after the parking brake is released, or while
driving, there is a problem with the Electric
Parking Brake system. A message may also
display in the Driver Information
Center (DIC).
If the light does not come on, or remains
flashing, see your dealer.
Service Electric Parking Brake
Light
On some vehicles the service electric parking
brake light should come on briefly when the
vehicle is started. If it does not come on, have it fixed so it will be ready to warn if
there is a problem. For vehicles with the
reconfigurable cluster, this light may not
come on when the vehicle is started.
If this light stays on, the vehicle should be
taken to a dealer as soon as possible. See
Electric Parking Brake
0211. A message may
also display in the Driver Information
Center (DIC).
Antilock Brake System (ABS)
Warning Light
This warning light should come on briefly
when the vehicle is turned on. If the light
does not come on, have it fixed so it will be
ready to warn if there is a problem.
If the light comes on while driving, safely
stop as soon as it is possible and turn off
the vehicle. Then turn on the vehicle again
to reset the system.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Driving and Operating 187
Driving and Operating
Driving Information
Driving for Better Fuel Economy . . . . . . . 188
Distracted Driving . . . . . . . . . . . . . . . . . . . . . 188
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 188
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . 189
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 189
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 190
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . 191
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . 191
Driving on Wet Roads . . . . . . . . . . . . . . . . . 194
Hill and Mountain Roads . . . . . . . . . . . . . . 195
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 195
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 196
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 197
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . 200
Ignition Positions . . . . . . . . . . . . . . . . . . . . . 200
Starting the Engine . . . . . . . . . . . . . . . . . . . 202
Stop/Start System . . . . . . . . . . . . . . . . . . . . . 203
Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . 203
Retained Accessory Power (RAP) . . . . . . . 205
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . 205
Shifting out of Park . . . . . . . . . . . . . . . . . . . 205
Parking over Things That Burn . . . . . . . . 206
Active Fuel Management . . . . . . . . . . . . . . 206Extended Parking . . . . . . . . . . . . . . . . . . . . . 206
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 207
Running the Vehicle While Parked . . . . . 207
Automatic Transmission
Automatic Transmission . . . . . . . . . . . . . . . 207
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 209
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . 210
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 210
Brakes
Electric Brake Boost . . . . . . . . . . . . . . . . . . . 210
Antilock Brake System (ABS) . . . . . . . . . . . 210
Electric Parking Brake . . . . . . . . . . . . . . . . . . 211
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . 212
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Driver Mode Control . . . . . . . . . . . . . . . . . . . 214
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Adaptive Cruise Control (Advanced) . . . . 217
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 225 Assistance Systems for Parking or
Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Assistance Systems for Driving . . . . . . . . 230
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Automatic Emergency Braking (AEB) . . . 232
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Side Blind Zone Alert (SBZA) . . . . . . . . . . 236
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 236
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . 237
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Recommended Fuel . . . . . . . . . . . . . . . . . . . . 239
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 239
Fuels in Foreign Countries . . . . . . . . . . . . . 240
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 240
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . 240
Filling a Portable Fuel Container . . . . . . . 241
Trailer Towing
General Towing Information . . . . . . . . . . . 242
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . . . . . . . . . 242
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . 245
Towing Equipment . . . . . . . . . . . . . . . . . . . . 248
Trailer Sway Control (TSC) . . . . . . . . . . . . . 251
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . 252

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Driving and Operating 197
If stuck too severely for the traction system
to free the vehicle, turn the traction system
off and use the rocking method. See
Traction Control/Electronic Stability Control
0213.
{Warning
If the vehicle's tires spin at high speed,
they can explode, and you or others
could be injured. The vehicle can
overheat, causing an engine compartment
fire or other damage. Spin the wheels as
little as possible and avoid going above
56 km/h (35 mph).
Select All-Wheel Drive (AWD) Mode. See
Driver Mode Control 0214 and
All-Wheel Drive 0210.
Rocking the Vehicle to Get it Out
Turn the steering wheel left and right to
clear the area around the front wheels. Turn
off any traction system. Shift back and forth
between R (Reverse) and a low forward gear,
spinning the wheels as little as possible. To
prevent transmission wear, wait until the
wheels stop spinning before shifting gears.
Release the accelerator pedal while shifting,
and press lightly on the accelerator pedal when the transmission is in gear. Slowly
spinning the wheels in the forward and
reverse directions causes a rocking motion
that could free the vehicle. If that does not
get the vehicle out after a few tries, it
might need to be towed out. If the vehicle
does need to be towed out, see
Towing the
Vehicle 0320.
Vehicle Load Limits
It is very important to know how much
weight the vehicle can carry. This
weight is called the vehicle capacity
weight and includes the weight of all
occupants, cargo, and all
nonfactory-installed options. Two labels
on the vehicle may show how much
weight it may properly carry, the Tire
and Loading Information label and the
Certification/Tire label.
{Warning
Do not load the vehicle any heavier
than the Gross Vehicle Weight Rating
(GVWR), or either the maximum
front or rear Gross Axle Weight
Rating (GAWR). This can cause
(Continued)
Warning (Continued)
systems to break and change the
way the vehicle handles. This could
cause loss of control and a crash.
Overloading can also reduce stopping
performance, damage the tires, and
shorten the life of the vehicle.
Tire and Loading Information Label
Example Label
A vehicle-specific Tire and Loading
Information label is attached to the
center pillar (B-pillar). The tire and
loading information label shows the

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
198 Driving and Operating
number of occupant seating
positions (1), and the maximum vehicle
capacity weight (2) in kilograms and
pounds.
The Tire and Loading Information label
also shows the size of the original
equipment tires (3) and the
recommended cold tire inflation
pressures (4). For more information on
tires and inflation seeTires0287 and
Tire Pressure 0294.
There is also important loading
information on the vehicle Certification/
Tire label. It may show the Gross
Vehicle Weight Rating (GVWR) and the
Gross Axle Weight Rating (GAWR) for
the front and rear axle. See
“Certification/Tire Label” later in this
section.
“Steps for Determining Correct Load Limit–
1.
Locate the statement "The combined
weight of occupants and cargo
should never exceed XXX kg or
XXX lbs." on your vehicle’s placard.
2.Determine the combined weight of
the driver and passengers that will
be riding in your vehicle.
3.Subtract the combined weight of the
driver and passengers from XXX kg
or XXX lbs.
4.The resulting figure equals the
available amount of cargo and
luggage load capacity. For example,
if the "XXX" amount equals 1400 lbs.
and there will be five 150 lb
passengers in your vehicle, the
amount of available cargo and
luggage load capacity is 650 lbs.
(1400-750 (5 x 150) = 650 lbs.)
5.Determine the combined weight of
luggage and cargo being loaded on
the vehicle. That weight may not
safely exceed the available cargo and
luggage load capacity calculated in
Step 4.
6.If your vehicle will be towing a
trailer, load from your trailer will be
transferred to your vehicle. Consult
this manual to determine how this reduces the available cargo and
luggage load capacity of your
vehicle.”
See Trailer Towing 0245 for important
information on towing a trailer, towing
safety rules and trailering tips.
Example 1
1.Vehicle Capacity Weight for
Example 1 = 453 kg (1,000 lbs).
2.Subtract Occupant Weight @
68 kg (150 lbs) × 2 = 136 kg
(300 lbs).
3.Available Occupant and Cargo
Weight = 317 kg (700 lbs).

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
Driving and Operating 205
Retained Accessory Power (RAP)
When the ignition is turned from on to off,
the following features (if equipped) will
continue to function for up to 10 minutes,
or until the driver door is opened. These
features will also work when the ignition is
in RUN or ACC/ACCESSORY:
.Infotainment System
.Power Windows (during RAP this
functionality will be lost when any door
is opened)
.Sunroof (during RAP this functionality will
be lost when any door is opened)
.Auxiliary Power Outlet
.Audio System
.OnStar System
Shifting Into Park
1. Hold the brake pedal down and set theparking brake. See Electric Parking Brake
0 211.
2. Move the shift lever into P (Park) by holding in the button on the shift lever
and pushing the shift lever all the way
toward the front of the vehicle.
3. Turn the ignition off.
Leaving the Vehicle with the Engine
Running
{Warning
It can be dangerous to leave the vehicle
with the engine running. It could
overheat and catch fire.
It is dangerous to get out of the vehicle
if the shift lever is not fully in P (Park)
with the parking brake firmly set. The
vehicle can roll.
Do not leave the vehicle when the engine
is running. If you have left the engine
running, the vehicle can move suddenly.
You or others could be injured. To be
sure the vehicle will not move, even
when you are on fairly level ground,
always set the parking brake and move
the shift lever to P (Park). See Shifting
Into Park 0205. If you are towing a
trailer, see Driving Characteristics and
Towing Tips 0242.
If you have to leave the vehicle with the
engine running, be sure the vehicle is in
P (Park) and the parking brake is set before
you leave it. After you have moved the shift
lever into P (Park), hold the regular brake pedal down. Then, see if you can move the
shift lever away from P (Park) without first
pressing the button.
If you can, it means that the shift lever was
not fully locked in P (Park).
Torque Lock
Torque lock is when the weight of the
vehicle puts too much force on the parking
pawl in the transmission. This happens when
parking on a hill and shifting the
transmission into P (Park) is not done
properly and then it is difficult to shift out
of P (Park). To prevent torque lock, set the
parking brake and then shift into P (Park). To
find out how, see
“Shifting Into Park” listed
previously.
If torque lock does occur, your vehicle may
need to be pushed uphill by another vehicle
to relieve the parking pawl pressure, so you
can shift out of P (Park).
Shifting out of Park
This vehicle is equipped with an electronic
shift lock release system. The shift lock
release is designed to prevent movement of
the shift lever out of P (Park), unless the
ignition is on and the brake pedal is applied.

Chevrolet Blazer Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14608203) - 2021 - CRC - 10/29/20
206 Driving and Operating
The shift lock release is always functional
except in the case of an uncharged or low
voltage (less than 9 volt) battery.
If the vehicle has an uncharged battery or a
battery with low voltage, try charging or
jump starting the battery. SeeJump Starting
- North America 0318 for more information.
To shift out of P (Park): 1. Apply the brake pedal.
2. Release the parking brake. See Electric
Parking Brake 0211.
3. Press the shift lever button.
4. Move the shift lever.
If unable to shift out of P (Park): 1. Fully release the shift lever button.
2. While holding down the brake pedal, press the shift lever button again.
3. Move the shift lever.
If the shift lever will not move from P (Park),
consult your dealer or a professional towing
service.Parking over Things That Burn
{Warning
Things that can burn could touch hot
exhaust parts under the vehicle and
ignite. Do not park over papers, leaves,
dry grass, or other things that can burn.
Active Fuel Management
This vehicle's engine may be equipped with
Active Fuel Management, which allows the
engine to operate on either all of its
cylinders, or in reduced cylinder operation
mode, depending on the driving conditions.
When less power is required, such as
cruising at a constant vehicle speed, the
system will operate in reduced cylinder
operation mode, allowing the vehicle to
achieve better fuel economy. When greater
power demands are required, such as
accelerating from a stop, passing,
or merging onto a freeway, the system will
maintain full-cylinder operation. If the
vehicle has an Active Fuel Management
indicator, see Driver Information Center (DIC)
for more information on using this display.
Extended Parking
It is best not to park with the vehicle
running. If the vehicle is left running, be
sure it will not move and there is adequate
ventilation.
See Shifting Into Park 0205 and
Engine Exhaust 0207.
If the vehicle is left parked and running with
the RKE transmitter outside the vehicle, it
will continue to run for up to half an hour.
If the vehicle is left parked and running with
the RKE transmitter inside the vehicle, it will
continue to run for up to an hour.
The vehicle could turn off sooner if it is
parked on a hill, due to lack of
available fuel.
The timer will reset if the vehicle is taken
out of P (Park) while it is running.