2021 CHEVROLET TRAILBLAZER overheating
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Chevrolet Trailblazer Owner Manual (GMNA-Localizing-U.S./Canada-
14400528) - 2021 - CRC - 11/7/19
280 Vehicle Care
{Warning
.Poorly maintained and improperly
used tires are dangerous.
.Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits0187.
.Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
maintain the recommended
pressure. Tire pressure should be
checked when the tires are cold.
.Overinflated tires are more likely
to be cut, punctured, or broken by
a sudden impact —such as when
hitting a pothole. Keep tires at the
recommended pressure.
.Worn or old tires can cause a
crash. If the tread is badly worn,
replace them.
(Continued)
Warning (Continued)
.Replace any tires that have been
damaged by impacts with
potholes, curbs, etc.
.Improperly repaired tires can cause
a crash. Only the dealer or an
authorized tire service center
should repair, replace, dismount,
and mount the tires.
.Do not spin the tires in excess of
56 km/h (35 mph) on slippery
surfaces such as snow, mud, ice,
etc. Excessive spinning may cause
the tires to explode.
All-Season Tires
This vehicle may come with all-season tires.
These tires are designed to provide good
overall performance on most road surfaces
and weather conditions. Original equipment
tires designed to GM's specific tire
performance criteria have a TPC specification
code molded onto the sidewall. Original
equipment all-season tires can be identified
by the last two characters of this TPC code,
which will be “MS.” Consider installing winter tires on the
vehicle if frequent driving on snow or
ice-covered roads is expected. All-season tires
provide adequate performance for most
winter driving conditions, but they may not
offer the same level of traction or
performance as winter tires on snow or
ice-covered roads. See
Winter Tires0280.
Winter Tires
This vehicle was not originally equipped
with winter tires. Winter tires are designed
for increased traction on snow and
ice-covered roads. Consider installing winter
tires on the vehicle if frequent driving on ice
or snow covered roads is expected. See your
dealer for details regarding winter tire
availability and proper tire selection. Also,
see Buying New Tires 0292.
With winter tires, there may be decreased
dry road traction, increased road noise, and
shorter tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking.
If using winter tires:
.Use tires of the same brand and tread
type on all four wheel positions.
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Vehicle Care 285
Treadwear Indicators:Narrow bands,
sometimes called wear bars, that show
across the tread of a tire when only
1.6 mm (1/16 in) of tread remains. See
When It Is Time for New Tires 0291.
UTQGS (Uniform Tire Quality Grading
Standards)
:A tire information system
that provides consumers with ratings
for a tire's traction, temperature, and
treadwear. Ratings are determined by
tire manufacturers using government
testing procedures. The ratings are
molded into the sidewall of the tire.
See Uniform Tire Quality Grading 0293.
Vehicle Capacity Weight
:The number
of designated seating positions
multiplied by 68 kg (150 lb) plus the
rated cargo load. See Vehicle Load
Limits 0187.
Vehicle Maximum Load on the Tire
:
Load on an individual tire due to curb
weight, accessory weight, occupant
weight, and cargo weight.
Vehicle Placard
:A label permanently
attached to a vehicle showing the
vehicle capacity weight and the original equipment tire size and recommended
inflation pressure. See
“Tire and Loading
Information Label” underVehicle Load
Limits 0187.
Tire Pressure
Tires need the correct amount of air
pressure to operate effectively.
{Warning
Neither tire underinflation nor
overinflation is good. Underinflated
tires, or tires that do not have
enough air, can result in:
.Tire overloading and overheating,
which could lead to a blowout.
.Premature or irregular wear.
.Poor handling.
.Reduced fuel economy.
Overinflated tires, or tires that have
too much air, can result in:
.Unusual wear.
.Poor handling.(Continued)
Warning (Continued)
.Rough ride.
.Needless damage from road
hazards.
The Tire and Loading Information label
on the vehicle indicates the original
equipment tires and the correct cold
tire inflation pressures. The
recommended pressure is the minimum
air pressure needed to support the
vehicle's maximum load carrying
capacity. See Vehicle Load Limits 0187.
How the vehicle is loaded affects
vehicle handling and ride comfort.
Never load the vehicle with more
weight than it was designed to carry.
When to Check
Check the pressure of the tires once a
month or more. Do not forget the
compact spare, if the vehicle has one.
The compact spare cold tire pressure
should be at 420 kPa (60 psi). See
Compact Spare Tire 0301.
Page 355 of 363
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14400528) - 2021 - CRC - 11/7/19
354 Index
DrivingAssistance Systems . . . . . . . . . . . . . . . . . . . . .222
Better Fuel Economy . . . . . . . . . . . . . . . . . . . . 181
Characteristics and Towing Tips . . . . . . . . 234
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Hill and Mountain Roads . . . . . . . . . . . . . . . 185
If the Vehicle is Stuck . . . . . . . . . . . . . . . . . . 187
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . .184
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . .184
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . . 187
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186
Driving the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . .2
E
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . . . 204
Electric Parking Brake . . . . . . . . . . . . . . . . . . . . 205
Electric Parking Brake Light . . . . . . . . . . . . . . . 98
Electrical Equipment, Add-On . . . . . . . . . . . . .241
Electrical System Engine Compartment Fuse Block . . . . . . . .274
Fuses and Circuit Breakers . . . . . . . . . . . . . .274
Instrument Panel Fuse Block . . . . . . . . . . . . 277
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Rear Compartment Fuse Block . . . . . . . . . .278 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . .253
Check Light (Malfunction Indicator) . . . . . 96
Compartment Overview . . . . . . . . . . . . . . . . .247
Coolant Temperature Gauge . . . . . . . . . . . . 94
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . .255
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . . 331
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . .252
Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . .102
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Power Messages . . . . . . . . . . . . . . . . . . . . . . . . 110
Running While Parked . . . . . . . . . . . . . . . . . .201
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194
Engine Air Filter Life System . . . . . . . . . . . . . 253
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Equipment, Towing . . . . . . . . . . . . . . . . . . . . . . 240
Event Data Recorders . . . . . . . . . . . . . . . . . . . . 342
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . . 200
Extender, Seat Belt . . . . . . . . . . . . . . . . . . . . . . . 49
Exterior Lamp Controls . . . . . . . . . . . . . . . . . . . . 114
Exterior Lighting Battery Saver . . . . . . . . . . 120
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . . . . . . .253
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . 117
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314
Fluid Automatic Transmission . . . . . . . . . . . . . . . .252
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 269
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Folding Seatback . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Forward Collision Alert (FCA) System . . . . 223
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232
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Index 357
Maintenance and CareAdditional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .322
Maintenance Schedule . . . . . . . . . . . . . . . . . . . 316 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . .325
Malfunction Indicator Lamp . . . . . . . . . . . . . . . 96
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Map Data Updates . . . . . . . . . . . . . . . . . . . . . . . 146
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Media Avoiding Untrusted Devices . . . . . . . . . . . . .130
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Mirrors
Automatic Dimming Rearview . . . . . . . . . . . 32
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . . 32
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Mirrors, Interior Rearview . . . . . . . . . . . . . . . . . . 31
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 Driver Control . . . . . . . . . . . . . . . . . . . . . . . . . 208
Monitor System, Tire Pressure . . . . . . . . . . . 286
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . 129N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 348
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Using the System . . . . . . . . . . . . . . . . . . . . . . . 134
Navigation Symbols . . . . . . . . . . . . . . . . . . . . . .138
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . 190
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Engine Oil Life System . . . . . . . . . . . . . . . . . .252
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . .102
Older Children, Restraints . . . . . . . . . . . . . . . . . .61
Online Owner Center . . . . . . . . . . . . . . . . . . . . 334
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
OnStar Additional Information . . . . . . . . . . . 344
OnStar Emergency . . . . . . . . . . . . . . . . . . . . . . . 344
OnStar Overview . . . . . . . . . . . . . . . . . . . . . . . . . 343
OnStar Security . . . . . . . . . . . . . . . . . . . . . . . . . . 344
OnStar System . . . . . . . . . . . . . . . . . . . . . . 133, 144
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Overheating, Engine . . . . . . . . . . . . . . . . . . . . . 258
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Instrument Panel . . . . . . . . . . . . . . . . . . . . . . . . .4
P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Shifting Out of . . . . . . . . . . . . . . . . . . . . . . . . 200
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Parking Brake and P (Park) MechanismCheck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Over Things That Burn . . . . . . . . . . . . . . . . . 200
Parking or Backing
Assistance Systems . . . . . . . . . . . . . . . . . . . . . 221
Passenger Airbag Status Indicator . . . . . . . . . 95
Passenger Compartment Air Filter . . . . . . . 179
Passenger Sensing System . . . . . . . . . . . . . . . . 56
Pedestrian Ahead Indicator . . . . . . . . . . . . . . 100
Perchlorate Materials Requirements, California . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Phone Apple CarPlay and Android Auto . . . . . . . . 156